摘要
设计了一种新型的平行排列液晶相位调制器(LC PM),可在纯相位的模式下进行相位调制,研究了液晶相位调制器的光学特性,理论上给予了分析.对畸变波前进行了调制,在1cm2的校正面积上,调制后的准确度PV(peak to valley)值接近λ/15(λ=0.6328μm),RMS(Root MeansSquare)可达到λ/100,斯特列尔比SR(Strehl Ratio)达到0.989.改变了传统的扭曲向列液晶器件难于进行纯相位调制和得到高准确度调制的缺点,达到了理想的效果.
The novel parallel-aligned liquid crystal spatial light modulator （LC SLM） is introduced,which is designed to operate at phase-only mode for wavefront correction. The optical characteristics characteristics of the LC SLM were measured and analyzed theoretically. The PV （Peak Valley） value of 0. 07049λ （λ=0. 6328μm） after correction on the area of 1 cm^2 was obtained with our phase-only LC SLM. And Strehl ratio of 0. 989 in our experiment indicates the approximate upper limit of the ability of LC SLM to correct a aherrated wavefront when it is used in adaptive optical system.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2006年第1期65-68,共4页
Acta Photonica Sinica
基金
国家自然科学基金(50473040
59973020
60277033
19974046)
吉林省科委基金(20020603
20010579)资助项目
关键词
相位调制器
液晶
平行排列
纯相位
Phase modulator
Liquid crystal
Parallel-aligned
Pure phase
