3. Diffraction grating metrology
Precise knowledge of the optical properties of the pulse compression grating is essential for optimum control of laser beam propagation during compression. At a minimum, these optical properties are diffraction efficiency and diffracted wave surface quality.
Diffraction efficiency is characterized using a photometer
[R6410]
at the grating's operating incidence, wavelength and polarization. Depending on requirements...
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Diffraction grating metrology