Nano (loop) antenna calculation using FDTD32bit

[Quant Nach]

I am a beginner.
I want to calculate the performance of a nano-loop antenna, for instance.
At the beginning of the program there is a screen for “initial property”.
You set the length scale to um (micro meter).
Is it possible for me to change it into nanometer so that afterward everything become nanometer?
At the screen for defining material property, I defined the material, but at the bottom of the screen there is a “wavelength”.
Should I change the wavelength into the wavelength I want, i.e. optical wavelength 800nm?

[Scott Newman]

Hello Quant,

The OptiFDTD engine uses the micrometer scale and it is not possible to change this to nanometer.

For your material question, if you are working with a Sellmeier material the wavelength is what is used in the equation to calculate the refractive index based on the coefficients you have given it so yes you should ensure it is set to the optical wavelength you are going to be modelling.

Scott

[Author]

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