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Proceedings Paper

Self-focusing and self-defocusing of the optical beam propagation in a nonlinear negative-refractive-index material
Author(s): Shuangchun Wen; Jinhua Wu; Kangsong Tang; Wenhua Su; Xiquan Fu; Dianyuan Fan
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Paper Abstract

We study the phenomena of self-focusing and self-defocusing of an optical beam in a nonlinear negative-refractive-index material (NRM). It is shown that an optical beam propagating in NRM experiences self-focusing and self-defocusing for negative and positive nonlinear refractive index respectively. The critical power for self-focusing is the same as that in a conventional nonlinear positive-refractive-index material. Further, we show by numerical simulations that the nonlinear NRM can be used to compensate for self-focusing in the propagation of high power lasers in conventional nonlinear positive-refractive-index medium. The modulation generated by self-focusing in nonlinear positive-refractive-index medium can be reduced drastically by inserting a piece of nonlinear NRM.

Paper Details

Date Published: 26 January 2005
PDF: 5 pages
Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); doi: 10.1117/12.569478
Show Author Affiliations
Shuangchun Wen, Hunan Univ. (China)
Jinhua Wu, Hunan Univ. (China)
Kangsong Tang, Hunan Univ. (China)
Wenhua Su, Hunan Univ. (China)
Xiquan Fu, Hunan Univ. (China)
Dianyuan Fan, Hunan Univ. (China)

Published in SPIE Proceedings Vol. 5627:
High-Power Lasers and Applications III
Dianyuan Fan; Ken-ichi Ueda; Jongmin Lee, Editor(s)

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