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

- March 31, 2024 at 6:33 am
  
  Kawshik
  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.
- April 1, 2024 at 7:19 pm
  
  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