Research Interests

04/21/04

Colin Sheppard's Research Interests

Confocal microscopy, near-field microscopy, nonlinear microscopy, interference microscopy, information theory of resolution, theory of 3D imaging, finite Fresnel number in imaging, electromagnetic theory of focusing, 3D image modeling and reconstruction, scattering and imaging, imaging through scattering media, beam propagation, including high aperture, flattened and pulsed beams, diffraction theory of high aperture focusing, optical data storage, super-resolution in microscopy, data storage and optical lithography.

Two-photon fluorescence microscopy

"In the scanning optical microscope nonlinear interactions are expected to occur between the object and a highly focused beam of light, which we hope will open up new ways of studying matter in microscopic detail hitherto not available. Nonlinear interactions include generation of sum frequencies, Raman scattering, two-photon fluorescence, and others."

CJR Sheppard, R Kompfner, Applied Optics, 17, 2879-2882 (1978) (and cover 15 September)

Bessel Beams

"A wave with zero-order Bessel function radial distribution propagates without change."

CJR Sheppard, T Wilson (1978) Gaussian-beam theory of lenses with annular aperture, IEE Journal on Microwaves, Optics and Acoustics, 2, 105-112.

Publications by topic:

Confocal Microscopy

Multiphoton microscopy

Microscopy

Near-field microscopy

4Pi and theta microscopy

Phase contrast, dark field and polarization microscopy

Optical fibre microscopes

Microscopy of electronic devices

Acoustic microscopy

Electron optics

Microscope imaging and noise performance

Microscope imaging

Signal, noise and detectors

3D imaging

Diffraction theory of focusing & imaging

Diffraction theory

Diffraction by muscle fibres

High aperture focusing

Fresnel number

Aberrations

Diffraction theory of focusing & imaging (II)

Information theory

Pupil filters

Detector arrays

Image reconstruction

Image processing

Beam and pulse propagation

Beam propagation

Bessel beams

Ultrashort pulses

Fractional Fourier transforms and phase space representations

Optical technology

Interferometry

Thin films

Surface profiling

Surface scattering

Optical measurement

Photonics

Optical fibres

Photoelectronic devices

Gratings and holography

Full list of publications

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This site was last updated 04/21/04