Self-focusing and self-defocusing of the optical beam propagation in a nonlinear negative-refractive-index material

Shuangchun Wen; Jinhua Wu; Kangsong Tang; Wenhua Su; Xiquan Fu; Dianyuan Fan

doi:10.1117/12.569478

26 January 2005 Self-focusing and self-defocusing of the optical beam propagation in a nonlinear negative-refractive-index material

Shuangchun Wen, Jinhua Wu, Kangsong Tang, Wenhua Su, Xiquan Fu, Dianyuan Fan

Author Affiliations +

Proceedings Volume 5627, High-Power Lasers and Applications III; (2005) https://doi.org/10.1117/12.569478
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Shuangchun Wen, Jinhua Wu, Kangsong Tang, Wenhua Su, Xiquan Fu, and Dianyuan Fan "Self-focusing and self-defocusing of the optical beam propagation in a nonlinear negative-refractive-index material", Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); https://doi.org/10.1117/12.569478

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