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    Sheppard, Colin

    TitleSr Scientific Engr Assoc
    SchoolLawrence Berkeley National Lab
    DepartmentEnergy Analysis Env Impacts
    Address1 Cyclotron Road
    Berkeley CA 94720
    Phone707/633-8633
    vCardDownload vCard

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      Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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      1. Sheppard C. Parameterization of the deterministic Mueller matrix: application to a uniform medium. J Opt Soc Am A Opt Image Sci Vis. 2017 Apr 01; 34(4):602-608. PMID: 28375330.
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      2. Sheppard C. Resolution and super-resolution. Microsc Res Tech. 2017 Jun; 80(6):590-598. PMID: 28181372.
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      3. Sheppard C. Parameterization of the Mueller matrix. J Opt Soc Am A Opt Image Sci Vis. 2016 Dec 01; 33(12):2323-2332. PMID: 27906260.
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      4. Sheppard C, Roth S, Heintzmann R, Castello M, Vicidomini G, Chen R, Chen X, Diaspro A. Interpretation of the optical transfer function: Significance for image scanning microscopy. Opt Express. 2016 Nov 28; 24(24):27280-27287. PMID: 27906300.
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      5. Sheppard C. Geometry of the Mueller matrix spectral decomposition. J Opt Soc Am A Opt Image Sci Vis. 2016 Jul 01; 33(7):1331-40. PMID: 27409690.
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      6. Korobchevskaya K, Peres C, Li Z, Antipov A, Sheppard C, Diaspro A, Bianchini P. Intensity Weighted Subtraction Microscopy Approach for Image Contrast and Resolution Enhancement. Sci Rep. 2016 May 12; 6:25816. PMID: 27174367; PMCID: PMC4865876.
      7. Roth S, Sheppard C, Heintzmann R. Superconcentration of light: circumventing the classical limit to achievable irradiance. Opt Lett. 2016 May 01; 41(9):2109-12. PMID: 27128086.
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      8. Sheppard C, Castello M, Diaspro A. Expressions for parallel decomposition of the Mueller matrix. J Opt Soc Am A Opt Image Sci Vis. 2016 04 01; 33(4):741-51. PMID: 27140786.
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      9. Wilding D, Pozzi P, Soloviev O, Vdovin G, Sheppard C, Verhaegen M. Pupil filters for extending the field-of-view in light-sheet microscopy. Opt Lett. 2016 Mar 15; 41(6):1205-8. PMID: 26977670.
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      10. Castello M, Sheppard C, Diaspro A, Vicidomini G. Image scanning microscopy with a quadrant detector. Opt Lett. 2015 Nov 15; 40(22):5355-8. PMID: 26565873.
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      11. Sung Y, Segars WP, Pan A, Ando M, Sheppard C, Gupta R. Realistic wave-optics simulation of X-ray phase-contrast imaging at a human scale. Sci Rep. 2015 Jul 14; 5:12011. PMID: 26169570; PMCID: PMC4500945.
      12. Sheppard C. Zernike expansion of pupil filters: optimization of the signal concentration factor. J Opt Soc Am A Opt Image Sci Vis. 2015 May 01; 32(5):928-33. PMID: 26366918.
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      13. Sheppard C. Diffraction of a focused wave by an aperture: a new perspective. J Opt Soc Am A Opt Image Sci Vis. 2015 Apr 01; 32(4):623-9. PMID: 26366772.
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      14. Sheppard C. Optimization of pupil filters for maximal signal concentration factor. Opt Lett. 2015 Feb 15; 40(4):550-3. PMID: 25680147.
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      15. Sheppard C, Kou SS, Lin J, Sharma M, Barbastathis G. Temporal reshaping of two-dimensional pulses. Opt Express. 2014 Dec 29; 22(26):32016-25. PMID: 25607169.
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      16. Sheppard C, Kou SS, Lin J. Two-dimensional complex source point solutions: application to propagationally invariant beams, optical fiber modes, planar waveguides, and plasmonic devices. J Opt Soc Am A Opt Image Sci Vis. 2014 Dec 01; 31(12):2674-9. PMID: 25606756.
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      17. Sheppard C. Polarized focused vortex beams: half-order phase vortices. Opt Express. 2014 Jul 28; 22(15):18128-41. PMID: 25089432.
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      18. Sheppard C. Creation of a 50,000? long needle-like field with 0.36? width: comment. J Opt Soc Am A Opt Image Sci Vis. 2014 Jun 01; 31(6):1326-7. PMID: 24977372.
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      19. Hoang TX, Chen X, Sheppard C. Multipole and plane wave expansions of diverging and converging fields. Opt Express. 2014 Apr 21; 22(8):8949-61. PMID: 24787784.
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      20. Sheppard C. Maréchal condition and the effect of aberrations on Strehl intensity. Opt Lett. 2014 Apr 15; 39(8):2354-7. PMID: 24978991.
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      21. Duan Y, Sheppard C, Rehman S, Chen N. Analytic method to optimize aperture design in focal modulation microscopy. Opt Lett. 2014 Mar 15; 39(6):1677-80. PMID: 24690867.
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      22. Sheppard C. Focusing of vortex beams: Lommel treatment. J Opt Soc Am A Opt Image Sci Vis. 2014 Mar 01; 31(3):644-51. PMID: 24690664.
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      23. Kou SS, Sheppard C, Lin J. Calculation of the volumetric diffracted field with a three-dimensional convolution: the three-dimensional angular spectrum method. Opt Lett. 2013 Dec 15; 38(24):5296-8. PMID: 24322241.
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      24. Sheppard C. Balanced diffraction aberrations, independent of the observation point: application to a tilted dielectric plate. J Opt Soc Am A Opt Image Sci Vis. 2013 Oct 01; 30(10):2150-61. PMID: 24322870.
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      25. Chen R, Agarwal K, Sheppard C, Chen X. Imaging using cylindrical vector beams in a high-numerical-aperture microscopy system. Opt Lett. 2013 Aug 15; 38(16):3111-4. PMID: 24104662.
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      26. Sheppard C, Mehta SB, Heintzmann R. Superresolution by image scanning microscopy using pixel reassignment. Opt Lett. 2013 Aug 01; 38(15):2889-92. PMID: 23903171.
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      27. Sung Y, Sheppard C, Barbastathis G, Ando M, Gupta R. Full-wave approach for x-ray phase imaging. Opt Express. 2013 Jul 29; 21(15):17547-57. PMID: 23938626.
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      28. Hoang TX, Chen X, Sheppard C. Rigorous analytical modeling of high-aperture focusing through a spherical interface. J Opt Soc Am A Opt Image Sci Vis. 2013 Jul 01; 30(7):1426-40. PMID: 24323160.
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      29. Chen R, Agarwal K, Sheppard C, Phang JC, Chen X. A complete and computationally efficient numerical model of aplanatic solid immersion lens scanning microscope. Opt Express. 2013 Jun 17; 21(12):14316-30. PMID: 23787620.
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      30. Choi H, Yew EY, Hallacoglu B, Fantini S, Sheppard C, So PT. Improvement of axial resolution and contrast in temporally focused widefield two-photon microscopy with structured light illumination. Biomed Opt Express. 2013 Jul 01; 4(7):995-1005. PMID: 23847726; PMCID: PMC3704103.
      31. Sheppard C, Lin J, Kou SS. Rayleigh-Sommerfeld diffraction formula in k space. J Opt Soc Am A Opt Image Sci Vis. 2013 Jun 01; 30(6):1180-3. PMID: 24323105.
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      32. Yew EY, Sheppard C, So PT. Temporally focused wide-field two-photon microscopy: paraxial to vectorial. Opt Express. 2013 May 20; 21(10):12951-63. PMID: 23736515; PMCID: PMC3686358.
      33. Sheppard C. Limitations of the paraxial Debye approximation. Opt Lett. 2013 Apr 01; 38(7):1074-6. PMID: 23546248.
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      34. Sheppard C. Pupil filters for generation of light sheets. Opt Express. 2013 Mar 11; 21(5):6339-45. PMID: 23482203.
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      35. Sheppard C. Complex source point theory of paraxial and nonparaxial cosine-Gauss and Bessel-Gauss beams. Opt Lett. 2013 Feb 15; 38(4):564-6. PMID: 23455137.
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      36. Sheppard C. Cylindrical lenses--focusing and imaging: a review [Invited]. Appl Opt. 2013 Feb 01; 52(4):538-45. PMID: 23385892.
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      37. Chen N, Rehman S, Sheppard C. Recent advances in optical microscopy methods for subcellular imaging of thick biological tissues. Crit Rev Biomed Eng. 2013; 41(4-5):393-403. PMID: 24941415.
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      38. Sheppard C, Mehta S. Three-level filter for increased depth of focus and Bessel beam generation. Opt Express. 2012 Dec 03; 20(25):27212-21. PMID: 23262671.
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      39. Balla NK, Yew EY, Sheppard C, So PT. Coupled and uncoupled dipole models of nonlinear scattering. Opt Express. 2012 Nov 05; 20(23):25834-42. PMID: 23187400.
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      40. Chen R, Agarwal K, Zhong Y, Sheppard C, Phang JC, Chen X. Complete modeling of subsurface microscopy system based on aplanatic solid immersion lens. J Opt Soc Am A Opt Image Sci Vis. 2012 Nov 01; 29(11):2350-9. PMID: 23201796.
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      41. Sheppard C. Geometric representation for partial polarization in three dimensions. Opt Lett. 2012 Jul 15; 37(14):2772-4. PMID: 22825129.
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      42. Chen R, Agarwal K, Sheppard C, Phang JC, Chen X. Resolution of aplanatic solid immersion lens based microscopy. J Opt Soc Am A Opt Image Sci Vis. 2012 Jun 01; 29(6):1059-70. PMID: 22673437.
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      43. Sánchez-Ortiga E, Sheppard C, Saavedra G, Martínez-Corral M, Doblas A, Calatayud A. Subtractive imaging in confocal scanning microscopy using a CCD camera as a detector. Opt Lett. 2012 Apr 01; 37(7):1280-2. PMID: 22466221.
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      44. Sheppard C, Kou SS, Depeursinge C. Reconstruction in interferometric synthetic aperture microscopy: comparison with optical coherence tomography and digital holographic microscopy. J Opt Soc Am A Opt Image Sci Vis. 2012 Mar 01; 29(3):244-50. PMID: 22472753.
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      45. Hyvärinen HJ, Rehman S, Tervo J, Turunen J, Sheppard C. Limitations of superoscillation filters in microscopy applications. Opt Lett. 2012 Mar 01; 37(5):903-5. PMID: 22378433.
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      46. Chen W, Chen X, Sheppard C. Optical color-image encryption and synthesis using coherent diffractive imaging in the Fresnel domain. Opt Express. 2012 Feb 13; 20(4):3853-65. PMID: 22418142.
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      47. Hoang TX, Chen X, Sheppard C. Multipole theory for tight focusing of polarized light, including radially polarized and other special cases. J Opt Soc Am A Opt Image Sci Vis. 2012 Jan 01; 29(1):32-43. PMID: 22218349.
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      48. Singh VR, Choi H, Yew EY, Bhattacharya D, Yuan L, Sheppard C, Rajapakse JC, Barbastathis G, So PT. Improving signal-to-noise ratio of structured light microscopy based on photon reassignment. Biomed Opt Express. 2012 Jan 01; 3(1):206-14. PMID: 22254180; PMCID: PMC3255338.
      49. Sheppard C. Partial polarization in three dimensions. J Opt Soc Am A Opt Image Sci Vis. 2011 Dec 01; 28(12):2655-9. PMID: 22193279.
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      50. Chen W, Chen X, Sheppard C. Optical double-image cryptography based on diffractive imaging with a laterally-translated phase grating. Appl Opt. 2011 Oct 10; 50(29):5750-7. PMID: 22015370.
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      51. Hu L, Chen R, Agarwal K, Sheppard C, Phang JC, Chen X. Dyadic Green's function for aplanatic solid immersion lens based sub-surface microscopy. Opt Express. 2011 Sep 26; 19(20):19280-95. PMID: 21996869.
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      52. Sheppard C, Rehman S. Highly convergent focusing of light based on rotating dipole polarization. Appl Opt. 2011 Aug 01; 50(22):4463-7. PMID: 21833122.
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      53. Kou SS, Waller L, Barbastathis G, Marquet P, Depeursinge C, Sheppard C. Quantitative phase restoration by direct inversion using the optical transfer function. Opt Lett. 2011 Jul 15; 36(14):2671-3. PMID: 21765504.
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      54. Lim KM, Lee GC, Sheppard C, Phang JC, Wong CL, Chen X. Effect of polarization on a solid immersion lens of arbitrary thickness. J Opt Soc Am A Opt Image Sci Vis. 2011 May 01; 28(5):903-11. PMID: 21532703.
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      55. Lin J, Yuan XC, Kou SS, Sheppard C, Rodríguez-Herrera OG, Dainty JC. Direct calculation of a three-dimensional diffracted field. Opt Lett. 2011 Apr 15; 36(8):1341-3. PMID: 21499350.
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      56. Sheppard C. Binary phase filters with a maximally-flat response. Opt Lett. 2011 Apr 15; 36(8):1386-8. PMID: 21499365.
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      57. Gao G, Chong SP, Sheppard C, Chen N. Considerations of aperture configuration in focal modulation microscopy from the standpoint of modulation depth. J Opt Soc Am A Opt Image Sci Vis. 2011 Apr 01; 28(4):496-501. PMID: 21478941.
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      58. Sung Y, Sheppard C. Three-dimensional imaging by partially coherent light under nonparaxial condition. J Opt Soc Am A Opt Image Sci Vis. 2011 Apr 01; 28(4):554-9. PMID: 21478949; PMCID: PMC3347766.
      59. Chen W, Chen X, Sheppard C. Optical image encryption based on diffractive imaging. Opt Lett. 2010 Nov 15; 35(22):3817-9. PMID: 21082007.
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      60. Waller L, Kou SS, Sheppard C, Barbastathis G. Phase from chromatic aberrations. Opt Express. 2010 Oct 25; 18(22):22817-25. PMID: 21164620.
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      61. Balla NK, So PT, Sheppard C. Second harmonic scattering from small particles using Discrete Dipole Approximation. Opt Express. 2010 Oct 11; 18(21):21603-11. PMID: 20941058.
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      62. Chong SP, Wong CH, Wong KF, Sheppard C, Chen N. High-speed focal modulation microscopy using acousto-optical modulators. Biomed Opt Express. 2010 Sep 30; 1(3):1026-1037. PMID: 21258527.
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      63. Sheppard C, Gong W, Si K. Polarization effects in 4Pi microscopy. Micron. 2011 Jun; 42(4):353-9. PMID: 21030264.
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      64. Gong W, Si K, Chen N, Sheppard C. Focal modulation microscopy with annular apertures: a numerical study. J Biophotonics. 2010 Jul; 3(7):476-84. PMID: 20391544.
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      65. von Bally G, Gu M, Sheppard C. Advanced micro and nanoscopy for biomedicine. J Biophotonics. 2010 Jul; 3(7):415-6. PMID: 20564490.
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      66. Chong SP, Wong CH, Sheppard C, Chen N. Focal modulation microscopy: a theoretical study. Opt Lett. 2010 Jun 01; 35(11):1804-6. PMID: 20517422.
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      67. Bhaduri B, Tay CJ, Quan C, Sheppard C. Motion detection using extended fractional Fourier transform and digital speckle photography. Opt Express. 2010 May 24; 18(11):11396-405. PMID: 20589000.
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      68. Mehta SB, Sheppard C. Sample-less calibration of the differential interference contrast microscope. Appl Opt. 2010 May 20; 49(15):2954-68. PMID: 20490258.
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      69. Tang WT, Chung E, Kim YH, So PT, Sheppard C. Surface-plasmon-coupled emission microscopy with a spiral phase plate. Opt Lett. 2010 Feb 15; 35(4):517-9. PMID: 20160803.
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      70. Gong W, Si K, Sheppard C. Divided-aperture technique for fluorescence confocal microscopy through scattering media. Appl Opt. 2010 Feb 01; 49(4):752-7. PMID: 20119030.
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      71. Mehta SB, Sheppard C. Phase-space representation of partially coherent imaging systems using the Cohen class distribution. Opt Lett. 2010 Feb 01; 35(3):348-50. PMID: 20125717.
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      72. Kou SS, Waller L, Barbastathis G, Sheppard C. Transport-of-intensity approach to differential interference contrast (TI-DIC) microscopy for quantitative phase imaging. Opt Lett. 2010 Feb 01; 35(3):447-9. PMID: 20125750.
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      73. Kou SS, Sheppard C. Image formation in holographic tomography: high-aperture imaging conditions. Appl Opt. 2009 Dec 01; 48(34):H168-75. PMID: 19956288.
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      74. Gong W, Si K, Chen N, Sheppard C. Improved spatial resolution in fluorescence focal modulation microscopy. Opt Lett. 2009 Nov 15; 34(22):3508-10. PMID: 19927193.
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      75. Si K, Gong W, Chen N, Sheppard C. Edge enhancement for in-phase focal modulation microscope. Appl Opt. 2009 Nov 10; 48(32):6290-5. PMID: 19904330.
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      76. Kah JC, Olivo M, Chow TH, Song KS, Koh KZ, Mhaisalkar S, Sheppard C. Control of optical contrast using gold nanoshells for optical coherence tomography imaging of mouse xenograft tumor model in vivo. J Biomed Opt. 2009 Sep-Oct; 14(5):054015. PMID: 19895117.
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      77. Chung E, Kim YH, Tang WT, Sheppard C, So PT. Wide-field extended-resolution fluorescence microscopy with standing surface-plasmon-resonance waves. Opt Lett. 2009 Aug 01; 34(15):2366-8. PMID: 19649099.
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      78. Tang WT, Yew EY, Sheppard C. Polarization conversion in confocal microscopy with radially polarized illumination. Opt Lett. 2009 Jul 15; 34(14):2147-9. PMID: 19823530.
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      79. Gong W, Si K, Sheppard C. Optimization of axial resolution in a confocal microscope with D-shaped apertures. Appl Opt. 2009 Jul 10; 48(20):3998-4002. PMID: 19593353.
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      80. Mehta SB, Sheppard C. Quantitative phase-gradient imaging at high resolution with asymmetric illumination-based differential phase contrast. Opt Lett. 2009 Jul 01; 34(13):1924-6. PMID: 19571953.
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      81. Wong CH, Chong SP, Sheppard C, Chen N. Simple spatial phase modulator for focal modulation microscopy. Appl Opt. 2009 Jun 10; 48(17):3237-42. PMID: 19516376.
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      82. Kah JC, Wong KY, Neoh KG, Song JH, Fu JW, Mhaisalkar S, Olivo M, Sheppard C. Critical parameters in the pegylation of gold nanoshells for biomedical applications: an in vitro macrophage study. J Drug Target. 2009 Apr; 17(3):181-93. PMID: 19016072.
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      83. Kah JC, Chow TH, Ng BK, Razul SG, Olivo M, Sheppard C. Concentration dependence of gold nanoshells on the enhancement of optical coherence tomography images: a quantitative study. Appl Opt. 2009 Apr 01; 48(10):D96-D108. PMID: 19340129.
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      84. Sheppard C. Beam duality, with application to generalized Bessel-Gaussian, and Hermite- and Laguerre- Gaussian beams. Opt Express. 2009 Mar 02; 17(5):3690-7. PMID: 19259209.
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      85. Si K, Gong W, Sheppard C. Model for light scattering in biological tissue and cells based on random rough nonspherical particles. Appl Opt. 2009 Feb 20; 48(6):1153-7. PMID: 23567576.
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      86. Lin J, Wang H, Zheng W, Lu F, Sheppard C, Huang Z. Numerical study of effects of light polarization, scatterer sizes and orientations on near-field coherent anti-Stokes Raman scattering microscopy. Opt Express. 2009 Feb 16; 17(4):2423-34. PMID: 19219145.
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      87. Si K, Gong W, Sheppard C. Three-dimensional coherent transfer function for a confocal microscope with two D-shaped pupils. Appl Opt. 2009 Feb 10; 48(5):810-7. PMID: 19209190.
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      88. Goh SH, Sheppard C, Quah AC, Chua CM, Koh LS, Phang JC. Design considerations for refractive solid immersion lens: application to subsurface integrated circuit fault localization using laser induced techniques. Rev Sci Instrum. 2009 Jan; 80(1):013703. PMID: 19191437.
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      89. Mehta SB, Sheppard C. Partially coherent image formation in differential interference contrast (DIC) microscope. Opt Express. 2008 Nov 24; 16(24):19462-79. PMID: 19030033.
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      90. Chen N, Wong CH, Sheppard C. Focal modulation microscopy. Opt Express. 2008 Nov 10; 16(23):18764-9. PMID: 19581963.
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      91. Kou SS, Sheppard C. Image formation in holographic tomography. Opt Lett. 2008 Oct 15; 33(20):2362-4. PMID: 18923623.
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      92. Sheppard C, Gong W, Si K. The divided aperture technique for microscopy through scattering media. Opt Express. 2008 Oct 13; 16(21):17031-8. PMID: 18852813.
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      93. Kah JC, Wan RC, Wong KY, Mhaisalkar S, Sheppard C, Olivo M. Combinatorial treatment of photothermal therapy using gold nanoshells with conventional photodynamic therapy to improve treatment efficacy: an in vitro study. Lasers Surg Med. 2008 Oct; 40(8):584-9. PMID: 18798290.
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      94. Kah JC, Lau WK, Tan PH, Sheppard C, Olivo M. Endoscopic image analysis of photosensitizer fluorescence as a promising noninvasive approach for pathological grading of bladder cancer in situ. J Biomed Opt. 2008 Sep-Oct; 13(5):054022. PMID: 19021402.
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      95. Liu L, Diaz F, Wang L, Loiseaux B, Huignard JP, Sheppard C, Chen N. Superresolution along extended depth of focus with binary-phase filters for the Gaussian beam. J Opt Soc Am A Opt Image Sci Vis. 2008 Aug; 25(8):2095-101. PMID: 18677372.
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      96. Gong W, Si K, Sheppard C. Modeling phase functions in biological tissue. Opt Lett. 2008 Jul 15; 33(14):1599-601. PMID: 18628810.
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      97. Yew EY, Sheppard C. Fractional Gouy phase. Opt Lett. 2008 Jun 15; 33(12):1363-5. PMID: 18552959.
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      98. Phonthammachai N, Kah JC, Jun G, Sheppard C, Olivo MC, Mhaisalkar SG, White TJ. Synthesis of contiguous silica-gold core-shell structures: critical parameters and processes. Langmuir. 2008 May 06; 24(9):5109-12. PMID: 18370434.
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      99. Lu F, Zheng W, Sheppard C, Huang Z. Interferometric polarization coherent anti-Stokes Raman scattering (IP-CARS) microscopy. Opt Lett. 2008 Mar 15; 33(6):602-4. PMID: 18347723.
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      100. Zeugolis DI, Khew ST, Yew ES, Ekaputra AK, Tong YW, Yung LY, Hutmacher DW, Sheppard C, Raghunath M. Electro-spinning of pure collagen nano-fibres - just an expensive way to make gelatin? Biomaterials. 2008 May; 29(15):2293-305. PMID: 18313748.
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      101. Sheppard C, Martinez-Corral M. Filter performance parameters for vectorial high-aperture wave fields. Opt Lett. 2008 Mar 01; 33(5):476-8. PMID: 18311297.
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      102. Sheppard C, Yew EY. Performance parameters for focusing of radial polarization. Opt Lett. 2008 Mar 01; 33(5):497-9. PMID: 18311304.
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      103. Sheppard C, Saari P. Lommel pulses: an analytic form for localized waves of the focus wave mode type with bandlimited spectrum. Opt Express. 2008 Jan 07; 16(1):150-60. PMID: 18521143.
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      104. Liu L, Chen N, Sheppard C. Double-reflection polygon mirror for high-speed optical coherence microscopy. Opt Lett. 2007 Dec 15; 32(24):3528-30. PMID: 18087531.
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      105. Yew EY, Sheppard C. Tight focusing of radially polarized Gaussian and Bessel-Gauss beams. Opt Lett. 2007 Dec 01; 32(23):3417-9. PMID: 18059952.
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      106. Kou SS, Sheppard C. Imaging in digital holographic microscopy. Opt Express. 2007 Oct 17; 15(21):13640-8. PMID: 19550632.
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      107. Moore NJ, Alonso MA, Sheppard C. Monochromatic electromagnetic fields with maximum focal energy density. J Opt Soc Am A Opt Image Sci Vis. 2007 Oct; 24(10):3115-22. PMID: 17912301.
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      108. Liu L, Liu C, Howe WC, Sheppard C, Chen N. Binary-phase spatial filter for real-time swept-source optical coherence microscopy. Opt Lett. 2007 Aug 15; 32(16):2375-7. PMID: 17700790.
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      109. Kah JC, Olivo MC, Lee CG, Sheppard C. Molecular contrast of EGFR expression using gold nanoparticles as a reflectance-based imaging probe. Mol Cell Probes. 2008 Feb; 22(1):14-23. PMID: 17686610.
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      110. Moore NJ, Alonso MA, Sheppard C. Monochromatic scalar fields with maximum focal irradiance. J Opt Soc Am A Opt Image Sci Vis. 2007 Jul; 24(7):2057-64. PMID: 17728830.
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      111. Sheppard C. Filter performance parameters for high-aperture focusing. Opt Lett. 2007 Jun 15; 32(12):1653-5. PMID: 17572736.
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      112. Sheppard C, Ledesma S, Campos J, Escalera JC. Improved expressions for performance parameters for complex filters. Opt Lett. 2007 Jun 15; 32(12):1713-5. PMID: 17572756.
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      113. Xu Y, Singh J, Sheppard C, Chen N. Ultra long high resolution beam by multi-zone rotationally symmetrical complex pupil filter. Opt Express. 2007 May 14; 15(10):6409-13. PMID: 19546946.
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      114. Tang WT, Chung E, Kim YH, So PT, Sheppard C. Investigation of the point spread function of surface plasmon-coupled emission microscopy. Opt Express. 2007 Apr 16; 15(8):4634-46. PMID: 19532709.
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      115. Liu C, Huang Z, Lu F, Zheng W, Hutmacher DW, Sheppard C. Near-field effects on coherent anti-Stokes Raman scattering microscopy imaging. Opt Express. 2007 Apr 02; 15(7):4118-31. PMID: 19532655.
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      116. Sheppard C. Fractal model of light scattering in biological tissue and cells. Opt Lett. 2007 Jan 15; 32(2):142-4. PMID: 17186044.
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      117. Heintzmann R, Sheppard C. The sampling limit in fluorescence microscopy. Micron. 2007; 38(2):145-9. PMID: 16934983.
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      118. Sheppard C. Fundamentals of superresolution. Micron. 2007; 38(2):165-9. PMID: 16916605.
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      119. Roy M, Sheppard C, Cox G, Hariharan P. White-light interference microscopy: a way to obtain high lateral resolution over an extended range of heights. Opt Express. 2006 Jul 24; 14(15):6788-93. PMID: 19516860.
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      120. Yew E, Sheppard C. Effects of axial field components on second harmonic generation microscopy. Opt Express. 2006 Feb 06; 14(3):1167-74. PMID: 19503438.
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      121. Cooper I, Roy M, Sheppard C. Focusing of pseudoradial polarized beams. Opt Express. 2005 Feb 21; 13(4):1066-71. PMID: 19494972.
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      124. Sheppard C, Campbell S, Hirschhorn MD. Zernike expansion of separable functions of cartesian coordinates. Appl Opt. 2004 Jul 10; 43(20):3963-6. PMID: 15285082.
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      125. Roy M, Sheppard C, Hariharan P. Low-coherence interference microscopy using a ferro-electric liquid crystal phase-modulator. Opt Express. 2004 May 31; 12(11):2512-6. PMID: 19475089.
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      126. Sheppard C. Defocused transfer function for a partially coherent microscope and application to phase retrieval. J Opt Soc Am A Opt Image Sci Vis. 2004 May; 21(5):828-31. PMID: 15139436.
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      127. Sheppard C. Orthogonal aberration functions for high-aperture optical systems. J Opt Soc Am A Opt Image Sci Vis. 2004 May; 21(5):832-8. PMID: 15139437.
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      129. Sheppard C, Cooper IJ. Fresnel diffraction by a circular aperture with off-axis illumination and its use in deconvolution of microscope images. J Opt Soc Am A Opt Image Sci Vis. 2004 Apr; 21(4):540-5. PMID: 15078025.
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      130. Sheppard C, Roy M, Sharma MD. Image formation in low-coherence and confocal interference microscopes. Appl Opt. 2004 Mar 01; 43(7):1493-502. PMID: 15015531.
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      131. Cox G, Sheppard C. Practical limits of resolution in confocal and non-linear microscopy. Microsc Res Tech. 2004 Jan 01; 63(1):18-22. PMID: 14677129.
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      132. Sheppard C, Török P. Focal shift and the axial optical coordinate for high-aperture systems of finite Fresnel number. J Opt Soc Am A Opt Image Sci Vis. 2003 Nov; 20(11):2156-62. PMID: 14620343.
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      133. McOrist J, Sharma MD, Sheppard C, West E, Matsuda K. Hyperresolving phase-only filters with an optically addressable liquid crystal spatial light modulator. Micron. 2003; 34(6-7):327-32. PMID: 12932777.
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      134. Sheppard C. Generalized Bessel pulse beams. J Opt Soc Am A Opt Image Sci Vis. 2002 Nov; 19(11):2218-22. PMID: 12413122.
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      135. Sheppard C. Three-dimensional phase imaging with the intensity transport equation. Appl Opt. 2002 Oct 01; 41(28):5951-5. PMID: 12371555.
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      136. Matsuda K, Roy M, Eiju T, O'Byrne JW, Sheppard C. Straightness measurements with a reflection confocal optical system-an experimental study. Appl Opt. 2002 Jul 01; 41(19):3966-70. PMID: 12099607.
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      137. Cox G, Sheppard C. Measurement of thin coatings in the confocal microscope. Micron. 2001 Oct; 32(7):701-5. PMID: 11334740.
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      138. Sheppard C, Larkin KG. Wigner function for nonparaxial wave fields. J Opt Soc Am A Opt Image Sci Vis. 2001 Oct; 18(10):2486-90. PMID: 11583265.
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      139. Sheppard C. Bessel pulse beams and focus wave modes. J Opt Soc Am A Opt Image Sci Vis. 2001 Oct; 18(10):2594-600. PMID: 11583277.
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      140. Gauderon R, Lukins PB, Sheppard C. Simultaneous multichannel nonlinear imaging: combined two-photon excited fluorescence and second-harmonic generation microscopy. Micron. 2001 Oct; 32(7):685-9. PMID: 11334738.
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      141. Gauderon R, Lukins PB, Sheppard C. Optimization of second-harmonic generation microscopy. Micron. 2001 Oct; 32(7):691-700. PMID: 11334739.
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      142. Sheppard C. High-aperture beams. J Opt Soc Am A Opt Image Sci Vis. 2001 Jul; 18(7):1579-87. PMID: 11444550.
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      143. Sheppard C, Larkin KG. Wigner function for highly convergent three-dimensional wave fields. Opt Lett. 2001 Jul 01; 26(13):968-70. PMID: 18040503.
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      144. Sheppard C. Confocal imaging through weakly aberrating media. Appl Opt. 2000 Dec 01; 39(34):6366-8. PMID: 18354647.
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      145. Sheppard C. Validity of the Debye approximation. Opt Lett. 2000 Nov 15; 25(22):1660-2. PMID: 18066307.
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      146. Matsuda K, Bold GT, Barnes TH, Eiju T, Sheppard C. Real-time phase-difference amplification with a liquid-crystal spatial light modulator. Appl Opt. 2000 Oct 01; 39(28):5125-30. PMID: 18354507.
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      147. Aguilar JF, Lera M, Sheppard C. Imaging of spheres and surface profiling by confocal microscopy. Appl Opt. 2000 Sep 01; 39(25):4621-8. PMID: 18350052.
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      148. Sheppard C, Larkin KG. Focal shift, optical transfer function, and phase-space representations. J Opt Soc Am A Opt Image Sci Vis. 2000 Apr; 17(4):772-9. PMID: 10757186.
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      149. Sheppard C. Polarization of almost-plane waves. J Opt Soc Am A Opt Image Sci Vis. 2000 Feb; 17(2):335-41. PMID: 10680636.
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      150. Sheppard C, Saghafi S. Transverse-electric and transverse-magnetic beam modes beyond the paraxial approximation. Opt Lett. 1999 Nov 15; 24(22):1543-5. PMID: 18079857.
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      151. Gauderon R, Lukins PB, Sheppard C. Effect of a confocal pinhole in two-photon microscopy. Microsc Res Tech. 1999 Nov 01; 47(3):210-4. PMID: 10544336.
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      152. Matsuda K, Roy M, O'Byrne JW, Fekete PW, Eiju T, Sheppard C. Straightness measurements by use of a reflection confocal optical system. Appl Opt. 1999 Sep 01; 38(25):5310-8. PMID: 18324033.
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      153. Gauderon R, Sheppard C. Effect of a finite-size pinhole on noise performance in single-, two-, and three-photon confocal fluorescence microscopy. Appl Opt. 1999 Jun 01; 38(16):3562-5. PMID: 18319958.
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      154. Matsuda K, Barnes TH, Oreb BF, Sheppard C. Focal-length measurement by multiple-beam shearing interferometry. Appl Opt. 1999 Jun 01; 38(16):3542-8. PMID: 18319955.
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      155. Sheppard C. Binary optics and confocal imaging. Opt Lett. 1999 Apr 15; 24(8):505-6. PMID: 18071553.
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      157. Gauderon R, Lukins PB, Sheppard C. Three-dimensional second-harmonic generation imaging with femtosecond laser pulses. Opt Lett. 1998 Aug 01; 23(15):1209-11. PMID: 18087476.
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      158. Sharma MD, Sheppard C. Holmium-doped optical fiber for filter applications. Appl Opt. 1997 Sep 20; 36(27):6815-21. PMID: 18259550.
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      159. Török P, Laczik Z, Sheppard C. Effect of half-stop lateral misalignment on imaging of dark-field and stereoscopic confocal microscopes. Appl Opt. 1996 Dec 01; 35(34):6732-5. PMID: 21151255.
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      161. Sheppard C, Gu M, Brain K, Zhou H. Influence of spherical aberration on axial imaging of confocal reflection microscopy. Appl Opt. 1994 Feb 01; 33(4):616-24. PMID: 20862056.
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      162. Gu M, Sheppard C. Effects of defocus and primary spherical aberration on images of a straight edge in confocal microscopy. Appl Opt. 1994 Feb 01; 33(4):625-30. PMID: 20862057.
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      163. Sheppard C, Connolly TJ, Lee J, Cogswell CJ. Confocal imaging of a stratified medium. Appl Opt. 1994 Feb 01; 33(4):631-40. PMID: 20862058.
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      164. Sheppard C, Gu M. Modelling of three-dimensional fluorescence images of muscle fibres: an application of the three-dimensional optical transfer function. J Microsc. 1993 Mar; 169(Pt 3):339-45. PMID: 8478914.
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      168. Sheppard C, Hrynevych M. Diffraction by a half-plane: a generalization of the Fresnel diffraction theory. Opt Lett. 1991 Jul 15; 16(14):1060-1. PMID: 19776875.
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      169. Wilson T, Hewlett SJ, Sheppard C. Use of objective lenses with slit pupil functions in the imaging of line structures. Appl Opt. 1990 Nov 01; 29(31):4705-14. PMID: 20577454.
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      170. Sheppard C. Aberrations in high aperture conventional and confocal imaging systems. Appl Opt. 1988 Nov 15; 27(22):4782-6. PMID: 20539650.
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      171. Matthews HJ, Hamilton DK, Sheppard C. Surface profiling by phase-locked interferometry. Appl Opt. 1986 Jul 15; 25(14):2372. PMID: 18231502.
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      173. Sheppard C, Cox IJ, Hamilton DK. Edge detection in micrometrology with nearly confocal microscopy. Appl Opt. 1984 Mar 01; 23(5):657. PMID: 18204622.
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      174. Cox IJ, Sheppard C. Scanning optical microscope incorporating a digital framestore and microcomputer. Appl Opt. 1983 May 15; 22(10):1474. PMID: 18195988.
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      175. Sheppard C, Hamilton DK. High resolution stereoscopic imaging. Appl Opt. 1983 Mar 15; 22(6):886. PMID: 18195893.
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      176. Cox IJ, Sheppard C, Wilson T. Improvement in resolution by nearly confocal microscopy. Appl Opt. 1982 Mar 01; 21(5):778-81. PMID: 20372538.
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      177. Hamilton DK, Wilson T, Sheppard C. Experimental observations of the depth-discrimination properties of scanning microscopes. Opt Lett. 1981 Dec 01; 6(12):625-6. PMID: 19710793.
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      178. Sheppard C, Wilson T. The theory of the direct-view confocal microscope. J Microsc. 1981 Nov; 124(Pt 2):107-17. PMID: 7321023.
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      179. Sheppard C, Wilson T. Imaging properties of annular lenses. Appl Opt. 1979 Nov 15; 18(22):3764-9. PMID: 20216691.
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      180. Sheppard C, Wilson T. Effect of spherical aberration on the imaging properties of scanning optical microscopes. Appl Opt. 1979 Apr 01; 18(7):1058-63. PMID: 20208874.
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      181. Sheppard C, Kompfner R. Resonant scanning optical microscope. Appl Opt. 1978 Sep 15; 17(18):2879-82. PMID: 20203892.
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