利用光学涡旋产生超连续谱

Supercontinuum generation with optical vortices.

作者信息

Neshev Dragomir N, Dreischuh Alexander, Maleshkov Georgi, Samoc Marec, Kivshar Yuri S

机构信息

Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia.

出版信息

Opt Express. 2010 Aug 16;18(17):18368-73. doi: 10.1364/OE.18.018368.

DOI:10.1364/OE.18.018368

PMID:20721230

Abstract

We employ an optical vortex beam for the generation of femtosecond supercontinuum in a solid state medium. We demonstrate that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum. Despite the strong self-focusing and the formation of multiple hot-spots along the vortex ring, the singularity is preserved in both the near- and far-fields.

摘要

我们采用光学涡旋光束在固态介质中产生飞秒超连续谱。我们证明，连续谱的产生过程是由涡旋的丝状化引发的，从而产生空间发散的连续谱。尽管存在强烈的自聚焦以及沿涡旋环形成多个热点，但奇点在近场和远场中均得以保留。