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学术报告: Nonlinear Optical Waves in a Curved Potential

日期: 2017-11-10     阅读次数:17

报告题目:Nonlinear Optical Waves in a Curved Potential

报告人: Professor Ray-Kuang Lee (李瑞光教授), Tsing-Hua University, Taiwan

报告时间:1111日,上午 1030

报告地点:致远楼413

报告简介: With micro-structured vertical cavity surface emission semiconductors (VCSEL), lasing on extremely higher-order whispering-gallery modes, dynamical chaotic modes, superposition of periodic-orbit and non-periodic orbitals, linear and nonlinear surface modes, and crescent waves are demonstrated in experiments and simulations. To have wave localized, the delicate balance of linear and nonlinear effects sustain self-localized solitary waves. However, their observation requires a threshold power that in many cases is not accessible. Here we experimentally demonstrate a thresholdless nonlinear localized wave pinned to the boundary of a curvature, in an elliptical-ring potential without any extra formation power. The corresponding lasing characteristics including near/far field and dispersion-relation measurements verify the localization of nonlinear waves. The introduction of curved manifolds opens a new generation for nonlinear optical systems and laser devices with a vanishing power threshold.

 



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