Asymmetric temporal profile of optical Kerr signal from GaAs/AlAs multilayer with λ/2 phase shift layer
Asymmetric temporal profile of optical Kerr signal from GaAs/AlAs multilayer with λ/2 phase shift layer
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具有 λ/2 相移层的 GaAs/AlAs 多层光学克尔信号的不对称时间分布
DOI：
10.1002/pssc.200879873
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
T. Isu
中科院分区：
文献类型：
--
作者：
K. Morita;Toshiyuki Kanbara;Yano Shinsuke;T. Kitada;T. Isu
用光泵浦探测技术测量了GaAs/AlAs多层膜窄腔模宽腔在短脉冲输入下的光克尔响应。我们观察到在Δt = 0附近的光学克尔信号的强非对称时间轮廓。对于Δ t0，信号的初始上升时间为1.0 ps。利用泵浦脉冲和探测脉冲在腔内的波形分析了克尔信号的非对称性。我们发现，当Δt > 0时，克尔信号的衰减比泵浦和探测脉冲所解释的光场分布的衰减快。这表明，克尔信号的强非对称分布是由磁化率的高阶项引起的强相移引起的。（© 2009 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆）
Optical Kerr response for a short-input-pulse of a GaAs/AlAs multilayer cavity which has a narrow cavity mode width was measured by an optical pump and probe technique. We observed a strong asymmetric temporal profile of the optical Kerr signal in the vicinity of Δt = 0. The initial rising time of the signal was 1.0 ps for Δt 0. The asymmetric profile of the Kerr signal was analyzed with the pulse shapes of the pump and probe pulses in the cavity. We found that the decay of the Kerr signal for Δt > 0 was faster than that of the profile explained by the pump and probe pulses. This suggests that the strong asymmetric profile of the Kerr signal was occurred by the strong phase shift due to the higher order term of the susceptibility. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)