8 May 2015 All-optically controlled light valve assembled by photorefractive crystal and PDLC hybrid structure
Author Affiliations +
Abstract
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vera Marinova, Ren Chung Liu, Ming Syuan Chen, Shiuan Huei Lin, Yi Hsin Lin, Ken Yuh Hsu, "All-optically controlled light valve assembled by photorefractive crystal and PDLC hybrid structure", Proc. SPIE 9508, Holography: Advances and Modern Trends IV, 95080O (8 May 2015); doi: 10.1117/12.2178985; https://doi.org/10.1117/12.2178985
PROCEEDINGS
6 PAGES


SHARE
Back to Top