Normal, degenerated, and anomalous-dispersion-like Cerenkov sum-frequency generation in one nonlinear medium

Normal, degenerated, and anomalous-dispersion-like Cerenkov sum-frequency generation in one nonlinear medium
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一种非线性介质中的正态、简并和类反常色散切伦科夫和频生成

DOI:
10.1364/prj.3.000106
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发表时间:
2015-08
期刊:
影响因子:
7.6
通讯作者:
Xianfeng Chen
Xianfeng Chen
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Huaijin Ren;Xiaohui Zhao;Xuewei Deng;Xianfeng Chen

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我们报告了在一维周期性极化铁电晶体中跨材料色散产生切伦科夫和频的实验实现。三种和频生成方案仅限制在畴壁附近并以非线性切伦科夫辐射的形式,在正常、简并和反常色散配置中得到了证明。我们利用它们的相位匹配几何形状,展示了切伦科夫辐射随相互作用波之间的色散关系而变化的整个演化场景。此外,还演示了两组具有不同半径和中心的锥形和频生成,这是由散射辅助相位匹配过程产生的。
We report on the experimental realization of Cerenkov sum-frequency generation across the material dispersion in a one-dimensional, periodically poled ferroelectric crystal. Three schemes of sum-frequency generation, confined only in the vicinity of domain walls and in the form of nonlinear Cerenkov radiation, are demonstrated in normal, degenerated, and anomalous-dispersion-like configurations. We exploit their phase-matching geometries, which exhibit a whole scenario of the evolution of Cerenkov radiation varying with the dispersion relationship among the interaction waves. In addition, two sets of conical sum-frequency generation with different radius and center are demonstrated, which result from scattering assistant phase-matching processes.
DOI: 10.1088/0953-8984/19/15/156225
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