July 15, 2022 at 6:05 pmschinta3Subscriber
Is it possible to have a constant complex (n+i*k) refractive index for a material, as is possible for the
July 15, 2022 at 6:24 pmjackzhfSubscriber
For a constant complex refractive index for a material in your question, did you refer to a non-dispersive material?
You can “define a material based on a single complex refractive index value (e.g., n + ik = 2 + 0.05i) for single frequency simulation.”
July 15, 2022 at 6:34 pmschinta3Subscriber
Essentially, I am looking to compute a photonic bandstructure, where one of the materials has absorption. I.e. from the planar hex bandstructure example:
I would like to see the effect of having a bandstructure of eps=3.4+0.1i as oppsoed to eps=3.4
this is a broadband simulation however. Is this possible?
July 15, 2022 at 7:13 pmGuilin SunAnsys Employee
Please note that in general the refractive index is a fucntion of wavelength/frequency. When you specify one value of the complex refractive index, it will mean all the wavelength/frequency you simulate will use this value, which might not be true. Then you band structure will not be correct at other wavelength except near the wavelength where it indeed has this material property.
If you want, you can add a nk object from material library, and then specify the complex index. It is likely that the small loss may not affect the band structure.
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