Hi, I'm trying to model a gold particle which is shined by a 808nm, 20mW laser. I'm using the RF module - electromagnetic wave, frequency domain to do the simulation. I have set up the wavelength, but don't know how to add the 20mW. I have tried to set a port, but it kept getting mistakes. What can I do?
Thank you very much in advance!
Dear Yana Li ,
welcome!
The laser beam is simulated a photon stream F whose power is p that can be expressed by the relation:
p = Fx Eph x A,
where F is the photon flux in photons/cm^2/s
Eph is the photon energy Eph=hc/lambda,
h is the Planck constant, c is the speed of light and lambda it wavelength.
and A is the area of the beam.
So you can finally model the beam by F as
F= p lmabda/ A h c in photons/cm^2/s
Best wishes
Hi, Yana!
It depends on the physics you're trying to simulate. The easiest way to do it is defining a laser beam heat source on the surface (or in volume, depending on the material), decomposing it in its temporal and spatial evolution.
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