Frequently Asked Questions

The efficiency performance varies depending on the specific grating. Efficiency curves are provided for three different gratings in the datasheet, but these are absolute theoretical efficiencies and do not indicate grating specifications.

The blaze angle is given by the formula 2a sinα= kλB, where a is the groove spacing, k is the diffraction order (usually k=1) and λB is the blaze wavelength (in Littrow configuration). The blaze angle is indicated on page 35.

Ruled plane gratings are used in monochromators and spectrographs, Raman spectrometers, spectroscopy, and beam isolation.

The custom master ruled gratings for CO2 lasers are made of stainless steel substrate material and have a gold coating.

The dimensions of the high-precision replica gratings typically range from 25x25 mm up to 120x140 mm.

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