Frequently Asked Questions

Ruled Reflective Diffraction Gratings are optical glass substrates composed of dense, equidistant parallel lines, coated with aluminized, multi-layer dielectric, or other reflective films. They can separate white light into various components through the diffraction effect or combine several different wavelength laser beams into one.

The dimensions of these diffraction gratings can go up to 90mm with a dimension tolerance of ±0.5mm, and thickness up to 20mm.

The groove density for these diffraction gratings ranges from 120 to 2400 grooves per millimeter.

The absolute diffraction efficiency of these gratings ranges from 60% to 98% at the blaze wavelength.

These diffraction gratings are made from optical glass and can be coated with bare aluminum, MLD, or custom coatings.

The damage threshold for these diffraction gratings can go up to 70 kW/cm².

Yes, custom production is available, especially for spectral beam combining applications. The groove density, diffraction efficiency, damage threshold, and substrate material can be custom produced based on different applications and requests.

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