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基于非线性时域有限差分法,模拟了克尔非线性光子晶体中的光敏超棱镜现象.结果发现,当光强变化230W/μm时,两束光在空间上能被分开10°,选取较大的基本功率将有助于提高其光强分辨率.而且,当自抽运光较强时,光子晶体中光波的波矢方向将会发生转动.此外,光束在非线性光子晶体中长距离传播时,透过率的变化将经历几个不同的阶段,分别对应于不同原因所造成的光强损耗.
Based on the nonlinear time-domain finite difference method, the phenomenon of photosensitive ultra-prisms in Kerr nonlinear photonic crystals was simulated, and the results showed that when the light intensity was changed by 230 W / μm, the two beams could be spatially separated by 10 °. Large basic power will help to improve the resolution of light intensity.Moreover, when the self-pumping light is strong, the wave direction of the light wave in the photonic crystal will rotate.In addition, the light beam in the nonlinear photonic crystal long distance Propagation, the change in transmission will go through several different stages, respectively, corresponding to different causes of light loss.