Imaging of director fields in liquid crystals using stimulated Raman scattering microscopy

被引：8

作者：

Lee, Taewoo ^{[1
,2
]}

Mundoor, Haridas ^{[1
,2
]}

Gann, Derek G. ^{[1
,2
]}

Callahan, Timothy J. ^{[1
,2
]}

Smalyukh, Ivan I. ^{[1
,2
,3
,4
,5
,6
]}

机构：

[1] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[2] Univ Colorado, Liquid Crystal Mat Res Ctr, Boulder, CO 80309 USA

[3] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA

[4] Univ Colorado, Mat Sci Engn Program, Boulder, CO 80309 USA

[5] Natl Renewable Energy Lab, Renewable & Sustainable Energy Inst, Boulder, CO 80309 USA

[6] Univ Colorado, Boulder, CO 80309 USA

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 10期

基金：

美国国家科学基金会;

关键词：

HIGH-SENSITIVITY; ORDER; CARS;

D O I：

10.1364/OE.21.012129

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate an approach for background-free three-dimensional imaging of director fields in liquid crystals using stimulated Raman scattering microscopy. This imaging technique is implemented using a single femtosecond pulsed laser and a photonic crystal fiber, providing Stokes and pump frequencies needed to access Raman shifts of different chemical bonds of molecules and allowing for chemically selective and broadband imaging of both pristine liquid crystals and composite materials. Using examples of model three-dimensional structures of director fields, we show that the described technique is a powerful tool for mapping of long-range molecular orientation patterns in soft matter via polarized chemical-selective imaging. (C) 2013 Optical Society of America

引用

页码：12129 / 12134

页数：6

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