Hello, I've read the web pages about meep units, but I still have questions. I'm using a nonlinear material (silica) and I've set the nonlinear coefficient chi3 to (4/3)*3E-8* n^2 where n is the linear refractive index and 3E-8 is the nonlinear coefficient n2 in um^2/W as described on the web page. My length unit is the um, so all is OK so far. My question is what are the units of the electric field, so I know what to pass to the (amplitude A0) of the gaussian-src. Assuming I=(1/2) epson0 c n |E|^2, the documentation says that epson0 = c = 1 then A0=sqrt(2I/n), with I in W/um^2. Using these values I'm not getting the results I expected (it's way off). I'm pretty certain all the values relating to time and distance are correct in my simulation. What are the units of the electric field in meep? Have I made any mistake on the above reasoning?
Thanks, João Luís Silva _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
