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Noncollinear double quasi phase matching in one-dimensional poled crystals

机译:一维极化晶体中的非共线双准相位匹配

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摘要

We demonstrate simultaneous phase matching of two different nonlinear processes, using a noncollinear interaction in periodically poled crystal with single grating. The noncollinear scheme provides phase-matching solutions over continuous regions of the optical spectrum and can be used for multiple-harmonic generation as well as all-optical effects. We have demonstrated experimentally third-harmonic generation of a 3 (mu)m pump wavelength in a noncollinear configuration using a periodically poled LiNbO_(3) crystal. We observed, in good agreement with theoretical calculation, very broad spectral and thermal acceptance bandwidths, as well as a relatively narrow angular bandwidth.
机译:我们演示了两个不同的非线性过程的同时相位匹配,在具有单光栅的周期性极化晶体中使用非共线相互作用。非共线方案在光谱的连续区域上提供相位匹配解决方案,可用于多重谐波生成以及全光效应。我们已经证明了使用周期性极化的LiNbO_(3)晶体在非共线配置中产生3μm泵浦波长的三次谐波产生。我们观察到,与理论计算非常吻合,光谱和热接受带宽非常宽,并且角带宽相对较窄。

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