PHOTOREFRACTIVE EFFECTS INDUCED BY PICOSECOND LIGHT-PULSES IN REDUCED KNBO3

被引：19

作者：

BIAGGIO, I

ZGONIK, M

GUNTER, P

机构：

[1] Institute of Quantum Electronics, Swiss Federal Institute of Technology, Zurich, CH-8093, ETH Honggerberg

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1992年 / 9卷 / 08期

关键词：

D O I：

10.1364/JOSAB.9.001480

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the writing of a photorefractive grating with pulses much shorter than the diffusion time of photoexcited charge carriers and compare the results with experiments performed in reduced KNbO3 crystals. From the grating-spacing dependence of the observed buildup time and diffraction efficiency we show that the lifetime of the photoexcited electrons is approximately 4 ns and that the mobility of these electrons before trapping is 0.4 +/- 0.2 cm2/(V s).

引用

页码：1480 / 1487

页数：8

共 41 条

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