Fast-response infrared phase modulator based on polymer network liquid crystal
Fast-response infrared phase modulator based on polymer network liquid crystal
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DOI：
10.1364/ome.5.000265
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发表时间：
2015-02-01
影响因子：
2.8
通讯作者：
Wu, Shin-Tson
中科院分区：
文献类型：
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作者：
Peng, Fenglin;Chen, Haiwei;Wu, Shin-Tson
我们报道了一种高双折射三联苯液晶混合物，命名为M3，用于红外相位调制，特别强调中波红外（MWIR）。除了高双折射，M3还具有出色的紫外线稳定性，适度的介电各向异性和非常宽的折射率范围。高双折射使得薄的盒间隙能够用于实现2 π相变，同时在MWIR区域中保持高透射率（T>98%）。为了实现快速的响应时间，我们采用了聚合物网络液晶使用M3与2 π相变在λ = 4 μ m和3.6-ms的响应时间。该响应时间比双相LC相位调制器快约100倍。(C)2015美国光学学会
We report a high birefringence terphenyl liquid crystal mixture, designated as M3, for infrared phase modulation with special emphasis on mid-wave infrared (MWIR). In addition to high birefringence, M3 exhibits excellent UV stability, modest dielectric anisotropy, and a very broad nematic range. The high birefringence enables a thin cell gap to be used for achieving a 2 pi phase change while maintaining a high transmittance (T>98%) in the MWIR region. To achieve fast response time, we employed a polymer network liquid crystal using M3 with 2 pi phase change at lambda= 4 mu m and 3.6-ms response time. This response time is about 100X faster than that of a nematic LC phase modulator. (C) 2015 Optical Society of America