Controlling the color of Lippmann holograms recorded in dichromated gelatin polyvinyl alcohol

Tiequan Cai; Yixing Tang; Hui Wang; Chaoming Dai; Lurong Guo

doi:10.1117/12.140465

2 March 1993 Controlling the color of Lippmann holograms recorded in dichromated gelatin polyvinyl alcohol

Tiequan Cai, Yixing Tang, Hui Wang, Chaoming Dai, Lurong Guo

Proceedings Volume 1732, Holographics International '92; (1993) https://doi.org/10.1117/12.140465
Event: Holographics International '92, 1992, London, United Kingdom

Abstract

The polyvinyl alcohol and several other organic materials are mixed into the aqueous gelatin while the film is coated. This thin solid film is sensitized by aqueous ammonium dichromate, so it is called a dichromated gelatin polyvinyl alcohol (DC-GPVA) holographic recording material. DC-GPVA not only possesses the same excellent holographic properties as the conventional dichromated gelatin (DCG) but also obviously improves its environmental stability. Experimental results have shown that the reconstruction wavelength of a Lippman hologram recorded in DC-GPVA can be shifted to longer or shorter wavelengths and freely controlled to a certain extent by varying the ratio of the gelatin and the polyvinyl alcohol and relative organic materials, or hardeners and its quantity, or heated temperature and heated time exerted on the drying films, or thickness of them. After the films are sensitized, they can be exposed by He-Cd or Ar⁺ laser (441.6 nm or 488.0 nm) and developed by the regular post processed method. Initial discussions are also presented about the functions and mechanisms of the polyvinyl alcohol and relative organic materials added into DC-GPVA.

Citation Download Citation

Tiequan Cai, Yixing Tang, Hui Wang, Chaoming Dai, and Lurong Guo "Controlling the color of Lippmann holograms recorded in dichromated gelatin polyvinyl alcohol", Proc. SPIE 1732, Holographics International '92, (2 March 1993); https://doi.org/10.1117/12.140465

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