来自单轴流体介质的旋光二次谐波产生。

Optically active second-harmonic generation from a uniaxial fluid medium.

作者信息

Han S H, Belkin M A, Shen Y R

机构信息

Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA.

出版信息

Opt Lett. 2004 Jul 1;29(13):1527-9. doi: 10.1364/ol.29.001527.

DOI:10.1364/ol.29.001527

PMID:15259735

Abstract

We have shown that optically active second-harmonic generation is allowed in a uniaxial fluid medium. A homeotropically aligned chiral smectic-A liquid crystal was used as an example. Phase matching was achievable by angle tuning. Chiral nonlinear susceptibility for the liquid crystal was deduced. The signal dropped precipitously as the sample underwent the transition from smectic-A to isotropic.

摘要

我们已经证明，在单轴流体介质中允许产生旋光二次谐波。以垂直排列的手性近晶A液晶为例。通过角度调谐可实现相位匹配。推导了该液晶的手性非线性极化率。当样品从近晶A相转变为各向同性相时，信号急剧下降。