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Second-harmonic generation with a high-index-clad waveguide

机译:高折射率包覆波导的二次谐波产生

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Theoretical and experimental analyses of second-harmonic generation (SHG) with a high-index-clad waveguide are reported. It was found that confinement of the propagation modes and the overlap between the fields of fundamental and second-harmonic waves could be increased in this waveguide. This structure was achieved in an x-cut MgO:LiNbO3 quasi-phase-matched (QPM) waveguide by use of Nb2O5 as a cladding layer. With the QPM SHG device, harmonic blue light of 5.5 mW at the 434-nm wavelength was generated with a normalized conversion efficiency of 1200%/W cm(2). (C) 1997 Optical Society of America.
机译:报道了具有高折射率包层波导的二次谐波产生(SHG)的理论和实验分析。已经发现,在该波导中,传播模式的限制以及基波和二次谐波的场之间的重叠可以增加。通过使用Nb2O5作为包覆层,在x切MgO:LiNbO3准相位匹配(QPM)波导中实现了该结构。使用QPM SHG器件,在434 nm波长处产生5.5 mW的谐波蓝光,归一化转换效率为1200%/ W cm(2)。 (C)1997年美国眼镜学会。

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