PHASE-SHIFTING TWYMAN-GREEN INTERFEROMETER UTILIZING NEMATIC AND CHOLESTERIC LIQUID-CRYSTAL CELLS

被引:0
|
作者
KANG, CS [1 ]
CHUNG, MS [1 ]
CHANG, DI [1 ]
KONG, HJ [1 ]
机构
[1] KOREA ADV INST SCI & TECHNOL,DEPT PHYS,TAEJON 305701,SOUTH KOREA
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1994年 / 247卷
关键词
D O I
10.1080/10587259408039217
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
We show a phase shifting Twyman-Green interferometer utilizing a nematic liquid crystal (NLC) cell and a cholesteric liquid crystal (CLC) cell. NLC cell is used as a phase shifter (PS) and CLC cell is used as an intensity stabilizer. The NLC PS is designed to induce a phase shift of 2 pi rad for He-Ne laser beam (lambda=632.8 nm) with the applied voltage of about 10 V, and a CLC cell which is designed to exhibit its selective reflection peak at 632.8 nm, is used to remove the fluctuation of the intensity of the interferogram. The interferometer system is evaluated by testing a concave mirror surface and the result is discussed.
引用
收藏
页码:313 / 319
页数:7
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