4 August 1998 Improvement on spatial resolution of relief holograms in dichromated gelatin
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Cleaving-etch method was presented for improving relief modulation resolution in gelatin. The principle of the method was introduced. Using the cleaving-etch method, a sine relief grating was obtained with 200 lines/mm spatial frequency and 0.4 micrometers relief depth. Comparison between enzyme-etching-imaging method and the cleaving-etch method was given and the reason why resolution of the latter much higher than the former was presented.
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Lin Pang, Jianhua Zhu, Yongqun Zeng, Hong Xiao, Lurong Guo, "Improvement on spatial resolution of relief holograms in dichromated gelatin", Proc. SPIE 3559, Holographic Displays and Optical Elements II, (4 August 1998); doi: 10.1117/12.318476; https://doi.org/10.1117/12.318476

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