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Doubly charged state of EL2 defect in MOCVD-grown GaAs

✍ Scribed by Nazir A. Naz; Umar S. Qurashi; Abdul Majid; M. Zafar Iqbal


Book ID
103885269
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
166 KB
Volume
401-402
Category
Article
ISSN
0921-4526

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Photorefractive effect in GaAs at low te
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We present here a theoretical and experimental analysis ofphotorefractive two-beam coupling in undoped GaAs as a function of temperature. Three major features are experimentally observed, firstly, a change of sign of the photorefractive beam coupling gain around 150 K, secondly, an enhancement of th