双波长敏感的非水溶性光致聚合物存储特性研究

Holographic storage characteristic of water-resistant photopolymer sensitive to two wavelengths

研究了一种新型的对红光和蓝光敏感的非水溶性光致聚合物材料的全息存储特性。该聚合材料由复合单体、复合光敏剂、复合引发剂、链转移剂及成膜物等成分组成,它具有防潮、后处理简单、分辨率高及耐高温等特点,对红、蓝光2种衍射效率均不低于75%,灵敏度为（45-65）mJ/cm^2。对该材料先后进行了双波长复用存储实验和角度复用存储实验,当用红光或蓝光再现时再现图像清晰可见,相邻2副图像之间无明显干扰,说明该材料具有良好的存储性能,适合作高密度数字全息存储的记录材料,可用作光通信中的波分复用器及其他光学元件。

The high-density holographic recording character of a novel water-resistant photopolymer material sensitive to red light and blue light was studied. The diffraction efficiencies of the hologram are all no less than 75 %, and the sensitivities are （45-65）mJ/cm^2 when exposing to red light and blue light respectively. The photopolymer material consists of compound monomer, compound sensitizer, compound initiator, chain transfer agent and binder, etc. The material has properties of waterproof, simple post-treatment, high resolution and high-temperature stability, etc. The multiplexing holographic storage shows that the reconstruction images are clear and bright. And there is no crosstalk among reconstruction images. Therefore, the photopolymer is fit for high-density data holographic recording. And it also can be used to produce the wavelength-division multiplexer used in light communication and other optical elements.