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Difference frequency generation in the mid-infrared with orientation-patterned gallium phosphide crystals

机译:中红外磷化镓晶体中红外线差频产生

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We report on the generation of coherent mid-infrared radiation around 5.85 mu m by difference frequency generation (DFG) of a continuous-wave Nd:YAG laser at 1064 nm and a diode laser at 1301 nm in an orientation-patterned gallium phosphide (OP-GaP) crystal. We provide the first characterization of the linear, thermo-optic, and nonlinear properties of OP-GaP in a DFG configuration. Moreover, by comparing the experimental efficiency to Gaussian beam DFG theory, we derive an effective nonlinear coefficient d = 17(3) pm/V for first-order quasi-phase-matched OP-GaP. The temperature and signal wavelength tuning curves are in qualitative agreement with theoretical modeling. (C) 2016 Optical Society of America
机译:我们在1064nm处的连续波Nd:YAG激光器的差异频率产生(DFG)和在1301nm处的二极管激光器在取向图案镓磷化镓(OP -gap)水晶。 我们在DFG配置中提供了Op-Gap的线性,热光学和非线性特性的第一次表征。 此外,通过将实验效率与高斯光束DFG理论进行比较,我们得出了一个有效的非线性系数D = 17(3)PM / V,用于一阶准相位匹配的Op-Gap。 温度和信号波长调谐曲线具有与理论建模的定性协议。 (c)2016年光学学会

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