Temperature effect on the diffraction efficiency of the liquid crystal spatial light modulator
详细信息 查看全文
- 作者：Zhaoliang Cao ; Li Xuan ; Lifa Hu ; Xinghai Lu and Quanquan Mu
- 关键词：Liquid– ; crystal devices ; Binary optics ; Spatial light modulator
- 刊名：Optics Communications
- 出版年：2006
- 出版时间：1 November 2006
- 年：2006
- 卷：267
- 期：1
- 页码：69-73
- 全文大小：151 K
文摘
Temperature effect on the diffraction efficiency of the liquid crystal spatial light modulator is investigated. The birefringence of the liquid crystal as functions of the temperature is measured with and without the power supply. It is shown that the birefringence reduces while the temperature increases. And the change magnitude of the birefringence has an exponential decay relation with the applied voltage for different temperature intervals. The scalar diffractive theory is used to analyze this effect on the diffraction efficiency. It indicates that the diffraction efficiency decreases from 98.7 % to 27.2 % while the temperature increases from 10 to 90 °C for 16 quantified levels. At last, temperature effect on its applications in optical testing and wavefront correction is discussed. It indicates that it has almost no effect on optical testing, but has an important effect on wavefront correction. And two solutions are given to eliminate this effect.