体位相全息透射光栅的设计和应用  

Design and Application about Body Posture Total Information Transmission Grating

作　　者：施建花[1,2] 

机构地区：[1]苏州大学信息光学工程研究所,江苏苏州215006 [2]盐城纺织职业技术学院,江苏盐城224005

出　　处：《科学之友（下）》2009年第8期1-4,共4页Friend of Science Amateurs

摘　　要：运用重铬酸盐明胶（DCG）制作的体位相全息透射光栅可在宽谱带范围内获得高衍射效率，与表面浮雕型光栅相比，它使后续光学系统的光通量大为提高。因此，此类光栅在天文光谱仪中有广泛的应用。本文从Kogelnik的标量耦合渡理论出发，设计在400nm到800nm波段范围内可获得高衍射效率且具有偏振无关性能的体位相全息透射光栅。Volume phase gratings made with dichromated gelatin can get high diffraction efficiency in the range of wide spectral bandwidth. Compared with surface-relief gratings, it greatly improves the throughput of the following optial systems. So this kind of gratings are widely applied in astromical spectroscopy. This thesis is about the designing of volume phase gratings with high diffraction efficiency and independent polarization properties in the range of 400nm to 800nm based on Kogelnik＇s coupled-wave theory.

关 键 词：体位相全息光栅 重铬酸盐明胶 设计 衍射效率 超级闪耀 

分 类 号：O439[机械工程—光学工程]