Photorefractive effect in hydrogen-reduced BaTiO3

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28196

Title:	Photorefractive effect in hydrogen-reduced BaTiO3
Authors:	Chang,JY;Chinjen,CR;Tsou,RH;Huang,CY;Sun,CC;Chang,MW
Contributors:	光電科學研究所
Keywords:	BARIUM-TITANATE;CRYSTALS
Date:	1997
Issue Date:	2010-06-29 19:43:32 (UTC+8)
Publisher:	中央大學
Abstract:	Optical and photorefractive properties of hydrogen-reduced BaTiO3 are investigated. Hydrogen-reduction induced a broad optical absorption around 620 nm. From two beam coupling, the electrooptic gain is highly dependent on intensity, with electrons being the major carriers. When the annealing temperature increases, the electrooptic gain decreases, though the trap density increases. From light-induced erasure decay measurement, the response time has a little change with intensity at low intensity, though it is much faster than that of the as-grown sample. These properties can be attributed to high dark conductivity of the reduced sample. The dark conductivity increases about three orders after hydrogen-reduction. It is about 6.6 x 10(-11) 1/(cm Omega) for the reduced sample, compared with 2.3 x 10(-14) 1/(cm Omega) for the as-grown.
Relation:	OPTICS COMMUNICATIONS
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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