Paper No S3.4: Switchable Liquid Crystal Devices for Efficient Light Steering

Shang, Xiaobing; Smet, Jelle De; Joshi, Pankaj; Cuypers, Dieter; Tan, Jin-Yi; Willekens, Oliver; Beeckman, Jeroen; Neyts, Kristiaan; Baghdasaryan, Tigran; Vervaeke, Michael; Thienpont, Hugo; Smet, Herbert De

doi:10.1002/sdtp.10552

Cited by 2 publications

(1 citation statement)

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“…Since the LC material and the transparent substrate material are, two media with different refractive indices, the topography of the interface between these materials can be designed to achieve a certain optical function. Linear micro prism structures made on polymer substrates have been combined with well aligned nematic liquid crystals to achieve effective beam deflection 12 , 13 . The advantage is that one can implement the desired beam steering performance more precisely and easily with the help of the specially designed micro optical structures 13 , 14 .…”

Section: Introductionmentioning

confidence: 99%

Fast switching cholesteric liquid crystal optical beam deflector with polarization independence

Shang¹,

Meeus²,

Cuypers³

et al. 2017

Sci Rep

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Optical beam deflectors based on the combination of cholesteric liquid crystals and polymer micro gratings are reported. Dual frequency cholesteric liquid crystal (DFCh-LC) is adopted to accelerate the switching from the homeotropic state back to the planar state. Polarization independent beam steering components are realized whose transmission versus the polarizing angle only varies 4.4% and 2.6% for the planar state and the homeotropic state, respectively. A response time of 451 ms is achieved for DFCh-LC-grating beam deflectors, which is fast compared to other nematic LC beam steerers with similar LC thickness.

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