Reply To: Absorption cross-section of AuNR excited by prism-based TIR

[katsuya2]

Hi, after fixing the source into the FDTD domain, I got the following result for absorption cross-section. 

From the monitor, tfsf source reached the particle and provided some enhancements on the tip of gold nanorods. 

After the peak position 660 nm, the rest of wavelength has 0 cross-section. I don't understand what's going on here.
I guess the glass and ITO substrate might have some interferences with each other. 

My idea is to get rid of the prism and air part and put the source in the glass to avoid the interefenrece. 
This still allows us to realize total internal reflection at the interface between ITO and glass to excite the plasmon. |

Please let me know what you think. 

Best,
Katsu