What is a diffraction grating?
A diffraction grating is a periodic structure patterned into a reflective surface, which disperses light into its constituent wavelengths.
• Gratings separate light into its colors, similar to a prism.
• Allows one to control and manipulate light.
• Used in all applications in which the wavelength of light must be tuned (spectroscopy, imaging, etc.), including beamline monochromators, FEL self-seeding, and x-ray emission spectrometers / RIXS