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Proceedings Paper

How to make a uniform beam produce self-focusing or self-defocusing effects
Author(s): Zhi-Zhong Zha; Yi Hu; Enpei Jin
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Paper Abstract

In the research of self-focusing and self-defocusing phenomena, it is generally known that the used nonlinear optical material possesses the coefficient of nonlinear refractive index n2(r), which is usually uniform in spacial distribution, that is, n2(r) is all the same in the material. Therefore in order to obtain the desired self-focusing or self-defocusing, the radial distribution of incident beam intensity I(r) must be Gaussian form and uniform beam can't cause self-focusing or self-defocusing. In addition, for the material n2 < 0, self-focusing is obtainable, but self-defocusing isn't. Otherwise, for the material n2 < 0, only self-defocusing can be obtained.

Paper Details

Date Published: 6 July 1994
PDF: 4 pages
Proc. SPIE 2229, Nonlinear Optical Materials for Switching and Limiting, (6 July 1994); doi: 10.1117/12.179587
Show Author Affiliations
Zhi-Zhong Zha, Harbin Institute of Technology (China)
Yi Hu, Harbin Institute of Technology (China)
Enpei Jin, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 2229:
Nonlinear Optical Materials for Switching and Limiting
M. J. Soileau, Editor(s)

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