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首页> 外文会议>Applications of Photonic Technology: Closing the Gap between Theory, Development, and Application 7C-Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers pt.1 >Evaluation of the length dependence of the pump depleted Cerenkov SHG
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Evaluation of the length dependence of the pump depleted Cerenkov SHG

机译：抽空切伦科夫SHG的长度依赖性评估

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摘要

In our recent published works we reported that the propagation length dependence of the conversion efficiency of the Cerenkov second harmonic generation (CSHG) in planar waveguides with a nonlinear substrate follows quite strict rules depending on an actual waveguide geometry together with the wavelength of the pump radiation. Namely, simple integral expressions show that the propagation length exponent may vary continuously from zero to a quadratic dependence. In this contribution, we generally analyze the propagation length dependence of CSHG for some specific arrangements. We also study, for the first time, the effect of pump depletion together with the influence of the pump wavelength and the effective refractive index. It is shown that the length dependence can thus be described by several categories, where the conversion efficiency is - with respect to the propagation length - linearly proportional and quadratic, but also the length exponent may continuously vary from 1 to 2 (for the classical phase-matching), including the so-called Cerenkov peak region, where the length exponent is equal to 3/2.
机译：在我们最近发表的工作中，我们报道了切伦科夫二次谐波产生（CSHG）在具有非线性衬底的平面波导中转换效率的传播长度依赖性遵循相当严格的规则，取决于实际的波导几何形状以及泵浦辐射的波长。即，简单的积分表达式表明传播长度指数可以从零到二次相关性连续变化。在此贡献中，我们通常针对某些特定安排分析CSHG的传播长度依赖性。我们还首次研究了泵浦损耗的影响以及泵浦波长和有效折射率的影响。结果表明，长度相关性可以用几类来描述，其中转换效率相对于传播长度为线性比例和二次方，但是长度指数可以连续地从1变为2（对于经典相位-匹配），包括所谓的切伦科夫峰区域，其中长度指数等于3/2。

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