標題: All-optically controlled light valve assembled by photorefractive crystal and PDLC hybrid structure
作者: Marinova, Vera
Liu, Ren Chung
Chen, Ming Syuan
Lin, Shiuan Huei
Lin, Yi Hsin
Hsu, Ken Yuh
電子物理學系
光電工程學系
Department of Electrophysics
Department of Photonics
關鍵字: photorefractive effect;space-charge field;inorganic crystals;polymer dispersed liquid crystals;hybrid structure;light valves
公開日期: 1-Jan-2015
摘要: A light-valve device, assembled by Ru-doped Bi12SiO20 (BSO) photoconductive substrate and polymer dispersed liquid crystal layer is proposed, in which all the processes are controlled by the near infrared light. Laser beam illumination (Gaussian shape) on BSO:Ru crystal caused charge carriers generation, which migrate and form an inhomogeneous distribution and subsequent space charge field. This surface-localized electromagnetic field penetrates into the PDLC layer and modulate the orientation of the liquid crystals, that caused reverse of the device initial opaque state to the highly transparent one. The proposed structure is simple and easy to fabricate, without requirements of ITO contacts and alignment layers and opens further possibilities for near-infrared applications.
URI: http://dx.doi.org/10.1117/12.2178985
http://hdl.handle.net/11536/128462
ISBN: 978-1-62841-629-9
ISSN: 0277-786X
DOI: 10.1117/12.2178985
期刊: HOLOGRAPHY: ADVANCES AND MODERN TRENDS IV
Volume: 9508
起始頁: 0
結束頁: 0
Appears in Collections:Conferences Paper


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