Study of effective optical thickness in photopolymer for application.
Study of effective optical thickness in photopolymer for application.
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DOI：
10.1364/ol.37.002241
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发表时间：
2012-06
期刊：
影响因子：
3.6
通讯作者：
Heng Wang;Jian Wang;Hongpeng Liu;Dan Yu;Xiu-Dong Sun;Jingwen Zhang
中科院分区：
文献类型：
--
作者：
Heng Wang;Jian Wang;Hongpeng Liu;Dan Yu;Xiu-Dong Sun;Jingwen Zhang
研究了光敏聚合物的有效光学厚度对其全息性能的影响。为了克服光栅的衰减以获得更好的均匀性，引入了多层方法，通过沿光聚合物的深度沿着调节染料的浓度来补偿由于吸收引起的记录光的衰减。设计、制备了厚度超过500 μm的多层光致聚合物，并进行了实验表征，显示出较好的布拉格选择性。通过角度复用，多层材料可以存储更多的全息图，并提高累积光栅强度，从而获得更大的全息存储容量。
The impact of the effective optical thickness of a photopolymer on its holographic performance was studied. To overcome the attenuation of gratings for a better uniformity, a multilayer approach was introduced, by adjusting concentrations of dye along the depth of photopolymer to compensate the attenuation of recording light due to absorption. Multilayer photopolymers with thicknesses over 500 μm were designed, fabricated, and characterized experimentally, exhibiting better Bragg selectivity. More holograms were stored in multilayer material by angular multiplexing, and the cumulative grating strength was enhanced, leading towards larger holographic storage capacity.