摘要
讨论了实时全息法应用于检测透明物体的情况下获得高衍射效率和高衬比条纹的若干问题。给出了同时获得高亮度检测场和高衬比条纹的最佳参数。在最佳光束比等于１和最佳相位调制度为１．４２时，衍射效率和光能利用率均可达到２９％。
Some problems on obtaining high efficiency of diffraction and high contrast of interference
fringes in real time holographic interferometry are discussed. The optimum beam ratio and the
optimum phase modulation for obtaining high brightness of the testing optical field and high
contrast of the interference fringes in real time holographic interferometry are presented. Both
of the diffraction efficiency and the light energy efficiency can be reached to 29% in case of that
the optimum beam ratio is 1 and the optimum phase modulation is 1.42.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第5期604-608,共5页
Acta Optica Sinica
基金
国家自然科学基金
云南省自然科学基金
关键词
实时全息法
衍射效率
条纹衬比度
相位调制度
real time
holographic interferometry, diffraction efficiency, contrast of fringes, beam ratio, phase
modulation.
