New method of making HOE by copying CGH on NGD

Guo, Lurong; Cheng, Xiaoxue; Guo, Yongkang; Hsu, Ping

doi:10.1117/12.50647

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1993

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“…In dichromated light -sensitive systems, one possible and very popular scheme for the photochemical processes that take place is that of Watanabe-Westheimer7: hv Cr(VI)+2e----Cr(IV) (3) Cr(IV)+Cr(VI)----'2Cr(V) (4) hv Cr(V)+2e---Cr(III)…”

Section: Discussionmentioning

confidence: 99%

<title>Influence of electron donors on the real-time diffraction efficiency of NGD holograms</title>

Wang

Cheng

Guo

et al. 1993

Holographics International '92

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Nongelatin dichromated holographic film(NGD) is a new holographic recording material. The holograms recorded on this material have better environmental stability , higher diffraction efficiency and stronger real time effect , etc. . In this paper , an experimental study to ascertain the influence of two electron donors, namely , N ,N -dimethylformamide (DMF ) and dimethylsulfoxide (DMSO) , on the real time diffraction efficiency (RTDE) of NGD holograms is carried out. The presence of electron donors not only improves the sensitivity , but also enhances the real time effect greatly. The RTDE of above 60 % at 1 orders of NGD plane transmission gratings is achieved by introducing electron donors.

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Section: Discussionmentioning

confidence: 99%