Several examples of diffraction grating analysis and design available in the Examples download:
Waveguide grating resonance analysis:
The electric field module distribution under resonance coupling into a diffraction grating structure waveguide mode (incident angle is close to 45 degrees).
Analysis of a finite beam incidence:
The square module field distribution of a reflected (red) and transmitted (blue) Gaussian beam under the resonance conditions of previous example (black is incident beam).
Normal incidence field analysis:
The electric field module distribution under resonance coupling into a diffraction grating structure waveguide mode in +-1 diffraction orders simultaneously (normal incidence).
Normal incidence reflection analysis:
The resonance reflection coefficient versus wavelength and incident angle close to the normal.
Multilayer design:
The multilayer laser mirror optimized to be highly reflective at a lasing wavelength of 914 nm and to be transparent at a pumping wavelength of 808 nm and at undesired wavelengths generation of 1064 nm and 1340 nm.