Physical mechanism of two-photon response in semi-insulating GaAs

LIU Xiu-Huan; CHEN Zhan-Guo; JIA Gang; SHI Bao

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Physical mechanism of two-photon response in semi-insulating GaAs

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The physical mechanism of two-photon response(TPR)in semi-insulating CaAs is studied.The measured photocurrent generated from the fabricated hemispherical GaAs sample responding to 1.3μm continuous wave laser shows a quadratic dependence on the coupled optical power and no saturation with the bias.The angular dependence of the photocurrent on the azimuth is in agreement with the anisotropy of double-frequency absorption(DFA)in GaAs single crystals.These results demonstrate DFA is the dominant mechanism of TPR in GaAs.

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《中国物理快报：英文版》 |2008年第1期|125-128|共4页
作者
LIU Xiu-Huan; CHEN Zhan-Guo; JIA Gang; SHI Bao;
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State Key Laboratory on Integrated Optoelectronics,College of Communication Engineering,Jilin University,Changchun 130012;

State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012;

State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012;

State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012;

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正文语种 chi
中图分类物理学;
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Physical mechanism of two-photon response in semi-insulating GaAs

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