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Photonics – Chinese

Photonics – Chinese

Topics related to Lumerical and more, in Chinese language.

入射光的角度范围设置问题

    • yxshang
      Subscriber

      老师您好,我当前在做一个仿真,仿真光源的入射角是一个连续范围(例如0-30°),请问这种情况在FDTD中应该如何进行光源设置?边界条件又该怎么设置呢?期待您的解答,谢谢老师!

    • Guilin Sun
      Ansys Employee

      你要的是什么结果?你知道光栅或者任何周期结构的响应与入射角有关,参见光栅方程。

      你应该是只能每次仿真一个角度,再根据光源是否相干,将结果相干叠加(场量),或者非相干叠加(强度或者透射率反射率)。

      如果是单波长,用BLoch边界条件: https://optics.ansys.com/hc/en-us/articles/360034382714-Bloch-boundary-conditions-in-FDTD-and-MODE

      如果是宽光谱,靠有用BFAST:https://optics.ansys.com/hc/en-us/articles/360034902273-Broadband-Fixed-Angle-Source-Technique-BFAST

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