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我们对偶氮聚合物液晶进行超高密度存储机理研究。采用矾酸钇晶体倍频激光器输出的5 32 nm波长绿色激光照射偶氮聚合物液晶薄膜 ,发现了偶氮聚合物液晶薄膜样品在 2 6 5 nm吸收峰处的双光子激发光致取向现象。实验采用侧链型偶氮聚合物液晶材料 ,其 THF溶液在玻璃基片上干燥后
We have studied the mechanism of ultra-high density storage of azo polymer liquid crystals. Azo polymer liquid crystal films were irradiated by 5 32 nm wavelength green laser output from yttrium octoate crystal frequency doubling laser and two-photon excitation photo-induced orientation at 2565 nm absorption peak was observed for azo polymer liquid crystal film samples. Experiments using side-chain azo polymer liquid crystal material, the THF solution was dried on a glass substrate