Photonics

Photonics

Topics related to Lumerical and more.

Query about the (n,k) data of gold for Terahertz region application

    • Kawshik Nath
      Subscriber

      Recently I'm working on a metamaterial based absorber. I followed a paper where they use gold in a layer. But they didn't give the (n.k) data of gold. So, which (n,k)  data of Gold is preferabble to work in 30 to 100 micrometer range wavelength.

    • Guilin Sun
      Ansys Employee

      In the material database it has 3 sets of Au data:

      you may choose the last one. The difference among them might be due to process technique and measurement method/accuracy in addition to the spectral range.

      However if it does not meet your requirements you can find the refractive index somewhere and import:

      Tips for using the (n,k) material model in FDTD

       

       

       

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