High diffraction efficiency optical diffraction ruled grating

High diffraction efficiency optical diffraction ruled grating

Plane Ruled Gratings

Ruled diffraction gratings are produced by ruling a series of closely spaced, straight parallel grooves into an optically flat aluminum coated substrate, known as the “master grating.” Precise, interferometrically-controlled ruling engines utilize a very fine diamond tool to form a sawtooth-shaped groove profile at a given angle (commonly referred to as the blaze angle) on the surface of a prepared substrate.

The replication process begins with the surface contour of a ruled master grating being vacuum deposition-coated with an extremely thin separation layer. An aluminum coating is then deposited on top of this separation layer. Then, an epoxy-coated flat glass substrate is placed on top of the layer-covered master, duplicating the grooved surface. The combination is cured and the process is finished when the replicated grating is separated from the master grating.

Specifications

e.g.

Master list

Please contact us for detailed Plane Ruled Gratings Master List

There are a wide range of ruled master gratings. Typical goove density range of the plane ruled gratings is from 20 lines/mm to 1800 lines/mm. Standard coating is aluminum. On request, MgF2, Gold or platinum are also available.

Actual product

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