The solitary evolution and deflection of matching Gauss beam have been investigated in biased dissipative photovoltaic-photorefractive crystals.

Beam quality of Gaussian beams passing through a spherically aberrated annular lens;

Parameter changes of Gaussian beams after passing through astigmatic lens;

Focusing Gaussian beams by annular lenses with spherical aberration;

The Technique of measuring Diameter of Filament by Gaussian Beam Fraunhofer Diffraction;

Focusing properties of Gaussian beams through a telescope-lens compound system;

Influence of the nonparallelism in Fabry-Perot interferometer mirrors alignment on the transmission of a Gaussian beam;

Dynamical Evolution of a Gauss beam in Logarithmically Nonlinear Electric Media;

Self-deflection of Matching Gauss beam in Two-photon Photovoltaic Photorefractive Media

The predominance of this making technique lies in that the Gauss light beams coming from the laser were changed into uniform plane light wave and used as the sources for making a high quality holographic grating.

The analytic exproxission of the Gauss light beam is obtained applied Huyghens-Fresnel principle.

Dynamic speckles appear when a rotating cylindrical object with the angular velocity ω was illuminated by a Gaussian light beam.

The predominance of this experimemal system lies in that the Gaussian light beams coming from the laser can be changed into uniform plane light wave and used as a source for making high quality holographic gratings.

This paper gives a brief introduction of the theory about dark spatial optical soliton, and analyses the effect of boundary condition on dark spatial optical soliton in a Gaussian light beam by means of numerical computation.