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KNBO3 CRYSTALS FOR PHOTOREFRACTIVE APPLICATIONS
被引：11
作者：
ZGONIK, M
[1
]
MEDRANO, C
[1
]
EWART, M
[1
]
WUEST, H
[1
]
GUNTER, P
[1
]
机构：
[1] ETH HONGGERBERG,INST QUANTUM ELECTR,CH-8093 ZURICH,SWITZERLAND
关键词：
KNBO3;
CRYSTALS;
PHOTOREFRACTIVE APPLICATIONS;
DOPING EXPERIMENTS;
ABO(3) COMPOUNDS;
ELECTROOPTICS;
D O I：
10.1117/12.200598
中图分类号：
O43 [光学];
学科分类号：
070207 ;
0803 ;
摘要：
Characterization and optimization of KNbO3 crystals for photorefractive applications over an extended spectral range is described. Intrinsic properties are used to describe the refractive index response to space-charge field gratings. Extrinsic properties that are important for the photorefractive effect, such as absorption, photoconductivity, charge transport, and trapping, are discussed. Some results on the extended IR response of crystals doped with Fe, Ni, Cu, Ce, Mn, and Co are presented. Post growth annealing at temperatures of 400 to 900 degrees C in a controlled atmosphere is shown to modify the charge-transport parameters, therefore also modifying the response time of photoinduced refractive index changes.
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页码：1930 / 1935
页数：6
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