Study on four-step computer-generated hologram with same diffraction efficiency of the zeroth and first order
Study on four-step computer-generated hologram with same diffraction efficiency of the zeroth and first order
复制标题
零级和一级衍射效率相同的四步计算机全息图研究
DOI:
10.1117/1.3605314
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发表时间:
2011-08
影响因子:
1.3
通讯作者:
Guo, Peiji
中科院分区:
文献类型:
--
作者:
Ren, Jianfeng;Guo, Peiji
A type of computer-generated hologram (CGH) with 4-step microstructure is designed based on diffraction theory. Results show that this CGH has almost the same diffraction efficiency at zeroth diffractive order and positive first diffractive order, which are 38.51% and 38.04%, respectively, and the intensity of these two beams is 76.55% of incident beam. This type of 4-step CGH can be used in an off-axis convex aspherical mirror interferometric system with double CGHs, while the signal-to-noise ratio (SNR) of the interferogram is high enough.
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