Features

Low Period Reflective Gratings for Use in Higher Orders

Ideal for High Resolution Spectroscopy

Typical Resolutions are 80% to 90% of Theoretical

Bare Aluminum Reflective Coating

Substrate: BK7

Grooves lines/mm：54.5、79、80

Blaze Angle：46°、63°

High-Resolution Echelle Gratings are special low period reflective gratings designed for use in the high orders. They are generally used with a second grating or prism to separate overlapping diffracted orders. These gratings also feature high blaze angles making them an ideal solution for high-resolution spectroscopy. Supplied on precision glass substrates, Echelles have a resolution of 80-90% of the theoretical value.

Warning:

The surface of a diffraction grating can be easily damaged by fingerprints, aerosols, moisture 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.