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Ultrafast switchable wide angle negative refraction in novel dual-frequency liquid crystal mixture |
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| Authors: | Chengliang Yang Dan Jia Zenghui Peng Yonggang Liu Zhaoliang Cao Quanquan Mu |
| Institution: | 1. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, 130033, China;2. Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China |
| Abstract: | Ultrafast switchable wide angle negative refraction in a novel dual-frequency liquid crystal mixture is demonstrated experimentally. Laterally fluorinated isothiocyanato phenyl-tolane liquid crystal compound is doped into Merck MLC-2048 to acquire the high birefringence dual-frequency liquid crystal. The maximum negative refraction angle achieved is about 12° and the switching time is only 25 ms for a 40-μm cell which is two orders faster than switchable negative refraction achieved before in nematic liquid crystals. Such properties provide a feasible approach to design negative refraction devices based on liquid crystals. |
| Keywords: | negative refraction fast switchable high birefringence dual-frequency liquid crystal |