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首页> 外文期刊>Japanese journal of applied physics >Terahertz Radiation from a (113)B GaAs/AIAs Coupled Multilayer Cavity Generated by Ultrashort Laser Pulse Excitation
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Terahertz Radiation from a (113)B GaAs/AIAs Coupled Multilayer Cavity Generated by Ultrashort Laser Pulse Excitation

机译：超短激光脉冲激发产生的（113）B GaAs / AIAs耦合多层腔的太赫兹辐射

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摘要

Terahertz (THz) radiation was demonstrated using a GaAs/AIAs coupled multilayer cavity grown on a (113)B GaAs substrate. Two cavity modes realized in the high-reflection band were simultaneously excited using ultrashort laser pulses for the difference frequency generation (DFG). Oscillations with a period of 0.3 ps were clearly observed in the temporal waveforms of time-resolved THz measurements. The oscillation period well agreed with the difference frequency between the two cavity modes (3.3 THz). We also measured the THz waveforms depending on the polarization direction of the excitation laser pulses, and the anisotropic signal amplitudes also agreed with the calculated anisotropy of the second-order nonlinear polarization on the (113)B GaAs substrate.
机译：使用在（113）B GaAs衬底上生长的GaAs / AIAs耦合多层腔体演示了太赫兹（THz）辐射。使用超短激光脉冲同时激发在高反射带中实现的两个腔模，以产生差频（DFG）。在时间分辨的THz测量的时间波形中清楚地观察到周期为0.3 ps的振荡。振荡周期与两个腔模之间的差频（3.3 THz）非常吻合。我们还根据激发激光脉冲的偏振方向测量了THz波形，并且各向异性信号幅度也与（113）B GaAs衬底上计算出的二阶非线性偏振的各向异性一致。

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  • 来源
    《Japanese journal of applied physics》 |2012年第4issue2期|p.04DG05.1-04DG05.4|共4页
  • 作者

    Sho Katoh; Toshikazu Takimoto; Yoshinori Nakagawa; Ken Morita; Takahiro Kitada; Toshiro Isu;

  • 作者单位

    Center for Frontier Research of Engineering, Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan;

    Center for Frontier Research of Engineering, Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan;

    Center for Frontier Research of Engineering, Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan,Nichia Corporation, Anan, Tokushima 774-8601, Japan;

    Center for Frontier Research of Engineering, Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan;

    Center for Frontier Research of Engineering, Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan;

    Center for Frontier Research of Engineering, Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506, Japan;

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