光学诱导晶格中横向不稳定性的观测

Observation of transverse instabilities in optically induced lattices.

作者信息

Neshev Dragomir, Sukhorukov Andrey A, Kivshar Yuri S, Krolikowski Wieslaw

机构信息

Nonlinear Physics Group and Centre for Ultrahigh-bandwidth Devices for Optical Systems, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia.

出版信息

Opt Lett. 2004 Feb 1;29(3):259-61. doi: 10.1364/ol.29.000259.

DOI:10.1364/ol.29.000259

PMID:14759044

Abstract

We study experimentally the Bloch-wave instabilities in optically induced photonic lattices. We reveal two different instability scenarios associated with either the transverse modulational instability of a single Bloch wave or the nonlinear interband coupling between different Bloch waves. We show that the transverse instability is greatly enhanced in the induced lattice in comparison with homogeneous media.

摘要

我们通过实验研究了光诱导光子晶格中的布洛赫波不稳定性。我们揭示了与单个布洛赫波的横向调制不稳定性或不同布洛赫波之间的非线性带间耦合相关的两种不同的不稳定性情形。我们表明，与均匀介质相比，诱导晶格中的横向不稳定性大大增强。