Questions

[fatpunkybearass]

Hi thanks for the inkstone package.

I'd like to ask about questions other than issues.

1. What is the num_g parameter? Why the higher this value the smaller z distance I can calculate?
   for num_g=5
   
   for num_g=50
   

2. And I set up a basic grating and use normal incidence (s.SetExcitation(theta=0., phi=0., s_amplitude=1, p_amplitude=0)) , is the field in x-z plane something I can see in real experiment using just laser and grating, nothing else? I did real experiment using laser to shine on this grating and I got diffracted plane waves into different directions, but here in simulation in the x-z plane E-field I see beams propagating parallel forward.
   simulation
   
   experiment
   

Thank you very much

[alexysong]

Hi,

1. I don't understand what exactly you are calculating and what does it mean by "it doesn't calculate"? Can you please give a minimal example code?
2. The simulation should match the experiment if done right. Your simulated field pattern is not a plane wave; it looks like a combination of some orders. Your experiment is probably a finite-waist incident beam on a larger grating. The output two orders walk-off physically. The simulation is infinite plane wave incident on infinite grating.