Gelator-doped liquid-crystal phase grating with multistable and dynamic modes

We demonstrate a gelator-doped nematic liquid-crystal (LC) phase grating, which can be operated in both the multistable mode and the dynamic mode. Thermoreversible association and dissociation of the gelator molecules can vary and fix the multistable diffraction efficiencies of the gratings. A volta...

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Veröffentlicht in:Applied physics letters 2014-01, Vol.104 (1)
Hauptverfasser: Lin, Hui-Chi, Yang, Meng-Ru, Tsai, Sheng-Feng, Yan, Shih-Chiang
Format: Artikel
Sprache:eng
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Zusammenfassung:We demonstrate a gelator-doped nematic liquid-crystal (LC) phase grating, which can be operated in both the multistable mode and the dynamic mode. Thermoreversible association and dissociation of the gelator molecules can vary and fix the multistable diffraction efficiencies of the gratings. A voltage (V) can also be applied to modulate dynamically the diffraction efficiencies of the grating, which behaves as a conventional LC grating. Experimental results show that the variations of the diffraction efficiencies in the multistable and dynamic modes are similar. The maximum diffraction efficiency is approximately 30% at V = 2 V.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4861155