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首页> 外文期刊>Chinese physics letters >An Optical Parametric Amplifier in Photonic Crystals of Nondispersive Medium with Perfect Bloch Phase Matching
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An Optical Parametric Amplifier in Photonic Crystals of Nondispersive Medium with Perfect Bloch Phase Matching

机译:具有完美Bloch相位匹配的非分散介质光子晶体中的光学参量放大器

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摘要

One-dimensional photonic crystal of second-order nonlinearity is studied. Among the three waves of the parametric interaction process of down-conversion with a nondispersive medium, two gap-edge localized modes and one travelling-mode are proposed, and an exact phase matching condition is realized using the periodic condition of the Bloch phase. Numerical simulation is implemented by the slow-envelope finite difference time domain method. In the case of a pulse wave pump of amplitude half-width 5.2×10~(-13) s, an intense optical parametric pulse with half-width about 5×10~(-14) s is observed.
机译:研究了一阶非线性的一维光子晶体。在非分散介质下变换的参量相互作用过程的三波中,提出了两种间隙边缘局域模和一种行进模,并利用布洛赫相的周期性条件实现了精确的相位匹配条件。通过慢包络有限差分时域方法进行数值模拟。在幅度为半宽度为5.2×10〜(-13)s的脉搏泵的情况下,观察到强光参量脉冲,其半宽度约为5×10〜(-14)s。

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