Low-coherence interference microscopy with an improved switchable achromatic phase-shifter

被引：10
|
作者：
Roy, M [1 ]
Cox, G [1 ]
Hariharan, P [1 ]
机构：
[1] Univ Sydney, Phys Opt Lab, Sch Phys A28, Sydney, NSW 2006, Australia
来源：
OPTICS EXPRESS | 2005年 / 13卷 / 22期
关键词：
D O I：
10.1364/OPEX.13.009125
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present results obtained with a computer-controlled low-coherence interference microscope featuring a modified optical layout that uses a pair of fast switchable achromatic phase-shifters. This layout makes it possible to use ferro-electric liquid-crystal devices made with readily available FLC materials having a switching angle of 45 degrees, and obtain phase shifts of 0 degrees and +/- 90 degrees. The use of phase shifts of 0 degrees and +/- 90 degrees simplifies calculations of the fringe visibility and the fractional fringe-order and yields maximum accuracy. (c) 2005 Optical Society of America.
引用
收藏
页码：9125 / 9130
页数：6
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