A Ansys FDTD simulation for phase change due to reflection

AI Thread Summary
The discussion centers on simulating phase change due to reflection on gold using Ansys FDTD, specifically focusing on discrepancies between observed phase change tendencies and those reported in a reference paper. The setup includes a Frequency Domain Field and a Power monitor, with the light source positioned 1um above the sample. The user seeks insights to improve the simulation accuracy. Key concerns include the configuration of the E-field angle in x-polarization and the placement of monitoring equipment. Guidance from experienced users is requested to resolve these issues.
tanhanhbi
Messages
9
Reaction score
3
TL;DR Summary
I set up the FDTD simulation to simulating the phase change due to reflection of difference materials. But the result is not similar with the reference paper
Hello,

I am currently simulating phase change due to reflection on gold (Au) using Ansys FDTD. My setup includes using a Frequency Domain Field and a Power monitor to observe the angle of the E-field in x-polarization. However, the phase change tendencies I'm observing do not match those in my reference paper.
My configuration: The yellow X is Frequency Domain Field and a Power monitor. The light source is 1um above the sample and the monitor is 1um above the light source
1718535526405.png
1718535550512.png

My simulation and reference paper.
1718535779364.png
1718535801513.png

Could anyone provide insights or guidance on how to improve my simulation?

Thank you.
 
Thread 'A quartet of epi-illumination methods'
Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...
Back
Top