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Efficient second-harmonic generation and modal dispersion effects in orientation-patterned GaAs waveguides

机译:定向模式GaAs波导中的高效二次谐波产生和模态色散效应

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Efficient second-harmonic conversion of 4 μm radiation was demonstrated in orientation-patterned GaAs (OPGaAs)nwaveguides (WGs). An experimentally corrected phase-matching curve for second harmonic generation (SHG) innOPGaAs WGs is presented. Influence of WG modes on the SHG process was studied. Two distinct types of SHG innthe waveguides were identified and related to the TE and TM modes. Each type has its own dependence on pumpnpolarization. The 21% W−1nnormalized conversion efficiency iswithin a factor of 0.75 fromthe predicted value for annideal WG. © 2010 Optical Society of America
机译:在取向图案化的GaAs(OPGaAs)n波导(WGs)中证明了4μm辐射的有效二次谐波转换。提出了实验校正的二次谐波(SHG)innOPGaAs WGs的相位匹配曲线。研究了WG模式对SHG过程的影响。在波导中发现了两种不同类型的SHG,它们与TE和TM模式有关。每种类型对泵浦极化都有自己的依赖性。 W-1归一化转换效率的21%介于WG预测值的0.75范围内。 ©2010美国眼镜学会

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