METHYLENE-BLUE SENSITIZED DICHROMATED GELATIN HOLOGRAMS - A NEW ELECTRON-DONOR FOR THEIR IMPROVED PHOTOSENSITIVITY
METHYLENE-BLUE SENSITIZED DICHROMATED GELATIN HOLOGRAMS - A NEW ELECTRON-DONOR FOR THEIR IMPROVED PHOTOSENSITIVITY
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DOI：
10.1364/ao.30.001598
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发表时间：
1991-05-01
期刊：
影响因子：
1.9
通讯作者：
BLYTH, J
中科院分区：
文献类型：
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作者：
BLYTH, J
以四甲基胍（TMG）为电子给体，亚甲基蓝增感重铬酸盐明胶（MBDCG）配合使用，在50 mJ/cm ~ 2的曝光量下，可以在633 nm处获得明亮的反射全息图。 因此，DCG全息记录和专有全息记录材料供应商的一些独立性现在对所有低功率He-Ne激光器开放。 该系统的高碱度允许未暴露的涂层材料在室温下具有数周而不是数天的有效寿命。 它的低重铬酸盐含量比通常的DCG配方具有环境优势。 用曙红代替亚甲蓝可产生与514 nm相似的光敏性。 TMG的优越性，以前报道的电子供体与MBDCG进行了讨论。
Tetramethylguanidine (TMG) used as the electron donor in conjunction with methylene blue sensitized dichromated gelatin (MBDCG) can produce bright reflection holograms recorded at 633 nm at an exposure level of 50 mJ/cm2. Thus DCG hologram recording and some independence from suppliers of proprietary holographic recording materials is now open to all those with low power He-Ne lasers. The high alkalinity of the system allows the unexposed coated material to have an effective lifetime at room temperature of weeks rather than days. Its low dichromate content has an environmental advantage over the usual DCG formulations. Replacement of methylene blue by eosin can produce similar photosensitivity to 514 nm. The superiority of TMG over previously reported electron donors used with MBDCG is discussed.