Can I model the two photon absorption (TPA) effect in FDTD?

    • Chris Kopetski
      Ansys Employee

      It is possible to partially simulate two photon absorption (TPA) effects, although it tends to be very challenging since an appropriate material model isn't provided by default.

      Interested users may find the following thesis/references to be helpful:

      • Integrated Nanoplasmonic Waveguides and Devices for All-Optical Nanocircuitry
      • FDTD Analysis of Two-Photon Absorption and Free-Carrier Absorption in Si High-Index-Contrast Waveguides

      Question migrated from the Lumerical Knowledge Exchange.

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