Experimental study on the combinative action of zinc chloride and triethanolamine on improving photosensitivity in red-sensitized dichromated gelatin
✍ Scribed by Feng Zhao; Wanzheng Geng; Lingzhen Jiang; Xiaou Li; Jing Hong
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 332 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0030-3992
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✦ Synopsis
An experimental study to ascertain the combinative action of zinc chloride and triethanolamine (TEA) on improving the photosensitivity of red-sensitized dichromated gelatin (RSDCG) has been carried out. Firstly, the exposure properties of homemade RSDCG holographic plates were studied experimentally. Then, zinc chloride was added into the red-sensitized dichromated gelatin to observe its catalytic eect on photo-cross-linking of gelatin molecules in RSDCG. After that, triethanolamine, as an external electron donor in the red-sensitized dichromated gelatin photo-chemical reaction, was introduced into the red-sensitized dichromated gelatin to make its photosensitivity higher in this study. Finally, the combinative eect of zinc chloride and triethanolamine on the photosensitivity in RSDCG holograms was studied. The results show that (1) zinc chloride and triethanolamine have an obvious combinative eect on improving the photosensitivity of the red-sensitized dichromated gelatin, (2) the curve of diraction eciency of holographic transmission grating recorded in the red-sensitized dichromated gelatin versus exposure energy is bell-shaped and the maximum diraction eciency of the grating can reach as high as 83% at an exposure energy of about 200 mJ/cm 2 , (3) the refractive index modulation of the holograms can reach a value of 0.