Re: [Meep-discuss] normalization

2011-01-18 Thread Steven G. Johnson
What property of the cavity are you trying to simulate? e.g. are you simulating and experiment? In an experiment, the light source is probably not within the photonic crystal. e.g. it may be coming from the air outside a finite photonic crystal. In that case, you would normalize by the i

[Meep-discuss] Anisotropic permittivity tensor (space-varying)

2011-01-18 Thread Iztok Bajc
Hello, I'm modeling an optically very anisotropic material, having the components of the permittivity tensor varying in space continuously, with some (localized) regions of quite strong gradients. The component values on space points (of a regular cubic grid) are not defined with any algebraic fu

[Meep-discuss] I am a bit confused about nonlinearity

2011-01-18 Thread Özgür Önder KARAKILINÇ
Dear meep users, I read the units and nonlinearity in meep wiki pages but I am a bit confused. I want to get delta_n=0.03. Therefore, following parameters are used in the ctl file.(my lattice constant a=1um) n2=10E-6 and related kerr parameter is chi(3)=7.053x10E-6 n=2.3 (linear index) When

[Meep-discuss] pulsed laser

2011-01-18 Thread Stefan Kapser
Hi, I'm trying to simulate a laser pulse falling on a dielectric structure and don't really know where to find the necessary information. What I am especially looking for is how to define the spectral properties of the laser pulse. How can I for example simulate a few cycle pulse? And how I can

Re: [Meep-discuss] normalization

2011-01-18 Thread Marell, M.J.H.
Hi Paolo, It is still not clear to me what you are trying to calculate. Maybe the flux-region is not the correct way to calculate the spectrum you’d like to get. Do you have a reference to a paper that can clarify things or a more detailed description of your problem. There are many different t