Self-trapping of two-dimensional optical beams and light-induced waveguiding in photorefractive InP at telecommunication wavelengths
作者:
M. Chauvet,
S. A. Hawkins,
G. J. Salamo,
M. Segev,
D. F. Bliss,
G. Bryant,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 70,
issue 19
页码: 2499-2501
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.118902
出版商: AIP
数据来源: AIP
摘要:
We demonstrated an experimental observation of self-trapping and self-deflection of a two-dimensional optical beam by the photorefractive effect at telecommunication wavelengths under an applied dc field. Self-trapping is effective for an intensity range related to the intensity-temperature resonance known for two-wave mixing in InP:Fe. The photorefractive index change giving rise to the trapping is measured at10−4,while the photorefractive space-charge field is measured at about 50 kV/cm, ten times higher than the applied field. We show experimentally that this index change creates a waveguide that can be used to guide a second beam at 1.55 &mgr;m. ©1997 American Institute of Physics.
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