From OLEG
The optical behavior of diffraction gratings and holograms is particularly difficult to accurately quantify. The diversity of definitions (used by different groups) reported in the literature complicates matters further. The description below establishes the standard measurement approach and terminology used within OLEG's daily practice and publications.
Definitions
Diffraction measurement variable definitions.
- Incident power
- Zero-order power (straight-through)
- mth-order power
- Power lost at first interface
- Scattered power
- Absorbed power in substrates
Diffraction Efficiency
something here
<math>\sqrt{2}</math>
Transmittance
Scattering
something here
Polarization Contrast
something here
Scattering
something here