用于中红外应用的亚毫秒响应聚合物网络液晶

Submillisecond-response polymer network liquid crystals for mid-infrared applications.

作者信息

Gou Fangwang, Chen Ran, Hu Minggang, Li Juanli, Li Jian, An Zhongwei, Wu Shin-Tson

出版信息

Opt Express. 2018 Nov 12;26(23):29735-29743. doi: 10.1364/OE.26.029735.

DOI:10.1364/OE.26.029735

Abstract

We formulated a high birefringence, large dielectric anisotropy, UV stable, and low absorption loss nematic liquid crystal mixture, named UCF-15, for mid-wave infrared (MWIR) applications. To achieve fast response time, we fabricated a polymer network liquid crystal (PNLC) using UCF-15 as host. At 40°C operating temperature, our PNLC shows 2π phase change at λ = 4 μm, submillisecond response time, and over 98% transmittance in the 3.8 to 5.1 μm region. Potential applications of this PNLC phase modulator for high speed laser beam steering, adaptive optics, and optical tweezer are foreseeable.

摘要

我们配制了一种用于中波红外（MWIR）应用的高双折射、大介电各向异性、紫外线稳定且低吸收损耗的向列型液晶混合物，名为UCF-15。为了实现快速响应时间，我们以UCF-15作为主体制备了一种聚合物网络液晶（PNLC）。在40°C的工作温度下，我们的PNLC在λ = 4μm时显示2π相变、亚毫秒级响应时间，并且在3.8至5.1μm区域的透过率超过98%。这种PNLC相位调制器在高速激光束转向、自适应光学和光镊方面的潜在应用是可预见的。