摘要
纯位相型空间光调制器可广泛用于各种精密光学工程，而正确使用纯位相型的空间光调制器的前提是正确的伽马修正。针对新型的Holoeye Pluto空间光调制器，简单地使用双孔干涉法和Webcam进行了成功的伽马修正。修正的结果使得8阶的闪耀光栅和16阶的闪耀光栅的1级光衍射效率分别达到70％和80％；同时利用涡旋位相图较好地生成了对像差及液晶的位相偏差较敏感的LG01环形光束。测量了该型液晶的位相稳定性，得出位相的波动上限或平均标准偏差为2．43°。
Pure phase spatial light modulator can be used in many kinds of precision optics, and the prerequisite of correctly using this kind of spatial light modulator is the proper Gamma correction. We complete Gamma correction for a new type of Holoeye Pluto spatial light modulator by simply using the double-hole interference method and Webcam. The results show that the first order diffractive efficiencies of 8-level and 16-level blazed grating reach 70% and 80%, respectively; by displaying vortex hologram, LGO1 doughnut beam is generated very well, which is sensitive to the aberration and the deviation of the phase modulated by the spatial light modulator. The stability of the modulated phase is also measured, and the variation upper limit or the averaged standard deviation is 2.43°.
出处
《激光与光电子学进展》
CSCD
北大核心
2013年第11期199-204,共6页
Laser & Optoelectronics Progress
基金
基金项目：福建省教育厅科研项目（JB10019）
关键词
光学器件
傅里叶光学
伽马修正
双孔干涉
纯位相液晶空间光调制器
optical devices
Fourier optics
Gamma correction
double-hole interference
pure phase liquid crystal spatial light modulator
