摘要
要拍摄高衍射效率的全息图，得依靠记录材料的特性曲线，正确地选择平均曝光量和物参比。特性曲线不仅依赖材料性质，并和化学处理有关。由于彩虹全息图的观察立体视角小，其亮度被大大地加强了。本文指出全息图的主要质量指标为亮度，信噪比，观察视角和单色性。拍摄全息图时，各种参数的选择，都要照顾到上述指标。它们常常有矛盾的一面，也有一致性的一面。一定要处理得当，才可能获得高质量的全息图。
For the purpose of shooting a high efficiency hologram,one should choose the right exposure and beam ratio according to the characteristic curve of the ecording material which is determined by the property of the material and related to the processing procedure. Because of the viewing solid angle of a rainbow holo-gram is small,therefore its brightness is high.Brightness,signal-to-noise ratio,viewing angle and monochromaticity are the main quality index of a hologram. When we choose the right parameters for shooting a high quality hologram,these index must be considered simultaneously.In some aspects they are contrary to each other,whereas in other aspects they are not.A high quality hologram can be made only in case of treating them properly.
出处
《激光杂志》
CAS
CSCD
北大核心
1994年第4期158-164,共7页
Laser Journal
关键词
调制度
衍射效率
亮度
全息照片
characteristics,average exposure,modulation level diffraction effi-ciency,brightness
