Polarizer-free and fast response microlens arrays using polymer-stabilized blue phase liquid crystals

Yi-Hsin Lin; Hung-Shan Chen; Hung-Chun Lin; Yu-Shih Tsou; Hsu-Kuan Hsu; Wang-Yang Li
March 2010
Applied Physics Letters;3/15/2010, Vol. 96 Issue 11, p113505
Academic Journal
We demonstrate polarizer-free and fast response microlens arrays based on optical phase modulation of polymer-stabilized blue phase liquid crystal (PSBP-LC). Polarization-independent optical phase shift is because the propagation of an incident light is along the optic axis of PSBP-LC, and birefringence of PSBP-LC induced by Kerr effect results in electrically tunable optical phase shift. The measured optical phase shift of a PSBP-LC phase modulation is around π radian at 150 Vrms for the cell gap of 7 μ. The response time is about 3 ms. The focal length is around 13.1 cm at 100 Vrms.


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