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WALK-OFF AND PUMP ENERGY DEPENDENCE OF TRANSVERSE BEAM PROFILES ON TRAVELING-WAVE PARAMETRIC GENERATION

机译:行波参数产生时横梁轮廓的行走和泵浦能量依赖性

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The phase-matching angle and pump energy dependence of transverse beam profiles on traveling-wave parametric generation in KTiOPO4 crystals are numerically calculated and compared with the previously measured results. It is found that the idler beam profile stretches in its walk-off direction and the signal beam profile stretches in the opposite direction as the idler walk-off angle becomes large due to the walk-off and back-conversion effects in the propagation process. It is also found that, even if walk-off does not exist, the transverse beam profile has a manifold ring shape as the pump energy is increased due to repeated conversion and back-conversion. (C) 1997 Elsevier Science B.V. [References: 9]
机译:数值计算了横束轮廓对KTiOPO4晶体行波参数生成的相位匹配角和泵浦能量依赖性,并将其与先前的测量结果进行了比较。已经发现,由于在传播过程中的走离和反向转换效应,当空转离开角变大时,空转光束分布在其离开方向上延伸,并且信号束分布在相反的方向上延伸。还发现,即使不存在失步,由于重复转换和反向转换而使泵浦能量增加时,横束轮廓也具有歧管环形状。 (C)1997 Elsevier Science B.V. [参考:9]

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