记录光束比对染料掺杂液晶膜中偏振全息光栅衍射效率的影响。

Effect of recording-beam ratio on diffraction efficiency of polarization holographic gratings in dye-doped liquid-crystal films.

机构信息

Graduate Institute of Photonics, National Changhua University of Education, No. 1, Jin De Road,Changhua 500, Taiwan.

出版信息

Opt Lett. 2010 Feb 1;35(3):405-7. doi: 10.1364/OL.35.000405.

DOI:10.1364/OL.35.000405

PMID:20125736

Abstract

The +1 order diffraction of polarization holographic gratings generated by two linear orthogonally polarized writing beams in dye-doped liquid-crystal films were increased by using two recording beams with unequal intensity. The maximum diffraction efficiency of the polarization holograms in our experimental sample can reach 23% when the intensity ratio of two recording beams is 7:1, and this value is almost triple that when the intensity ratio of two recording beams is 1:1.

摘要

通过使用两束强度不等的记录光束，增加了在掺杂染料的液晶膜中由两束正交线偏振写入光束产生的+1 阶偏振全息光栅的一级衍射。当两束记录光束的强度比为 7:1 时，实验样品中偏振全息图的最大衍射效率可达 23%，这一数值几乎是强度比为 1:1 时的三倍。