Features

Groove Density 1800 Grooves per mm

Free from Random Spacing Errors

Optimized for the UV Spectrum

45% to 65% Efficiencies

Bare Aluminum Coating

Sinusoidal Grating Profile

Seray offers a selection of holographic diffraction gratings optimized for high end applications that require a high signal to noise ratio. Holographic gratings feature low stray light, which nearly eliminates all ghosting that ruled gratings suffer from and makes them an ideal solution for applications such as Raman spectroscopy that require high signal to noise ratios.

These gratings are bare aluminum and do not contain an overcoat. However, custom MgF2 or gold coatings are available to protect the aluminum surface of the gratings. The gold coating offers high performance in the IR, while the MgF2 coating offers the best protection.

Warning

Optical gratings can be easily damaged by moisture, fingerprints, aerosols, or the slightest contact with any abrasive material. Gratings should only be handled when necessary and always held by the sides. Latex gloves or a similar protective covering should be worn to prevent oil from fingers from reaching the grating surface. No attempt should be made to clean a grating other than blowing off dust with clean, dry air or nitrogen. Solvents will likely damage the grating's surface.