The durability of a liquid crystal modulator for use with a high power laser

被引：8
|
作者：
Cao, Zhaoliang [1 ]
Mu, Quanquan
Hu, Lifa
Liu, Yonggang
Xuan, Li
机构：
[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Jilin, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2007年 / 9卷 / 04期
关键词：
liquid-crystal devices; laser damage; spatial light modulator;
D O I：
10.1088/1464-4258/9/4/018
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The durability of a liquid crystal (LC) modulator for use with a high power laser is measured at a wavelength of 808 nm. It is shown that the LC modulator can withstand a laser power density of 133 W cm(-2). For a laser power density greater than 133 W cm(-2) the phase transition is caused by the absorption of the material. In order to improve the durability, the absorption of glass, polyimide (PI), indium tin oxide and LC were measured. Results indicated that the phase transition of the nematic LC is mainly caused by the absorption of glass and PI. These results can be used for a LC modulator with nematic LC material, and it is important to use an LC modulator in optical systems with high power lasers.
引用
收藏
页码：427 / 430
页数：4
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