Optometrics offers OEM custom and standard original, replicated, ruled and holographic gratings for UV-VIS-NIR spectroscopy; also includes echelles, grazing incidence gratings, concave holographic gratings, transmission grating beamsplitters, 50/50 beamsplitters and reflecting beam dividers.
Material:
Pyrex and float glass are routinely available as standard materials. However, gratings can generally be replicated on any hard surface such as Zerodur, Fused Silica, Metals and Hard Plastics.
Surface coating:
Bare aluminum offers good visible and infrared performance. AlMgF2 (aluminum magnesium fluoride) is used for enhanced UV performance. Gold is used to increase reflectivity primarily in the near infrared.

OEM custom size capabilities:
Thicknesses of 2mm, 3mm, 5mm, 6mm, 9.5mm, 12mm and 16mm float glass are routinely available for faster delivery. Sizes in round, rectangular or square shapes as small as 6 mm, up to 90 mm are within Optometrics capabilities, depending upon which grating you have chosen.

Typical Specifications Dimensional tolerances:±0.5 mm Thickness tolerances:±0.5 mm Efficiencies: Ruled: 60 - 80% at blaze λ Holographic: 45 - 65% at peak λ Clear aperture; 90% Groove parallelism to edge: ±0.5°		Main Applications : Chemistry Physics Life Science Engineering Communications
Mode	Standard Replica Gratings	P-Type Replica Gratings: (pulsed type)	CW-Type Replica Gratings: (for continuous high power applications) Grating
Pulsed	350 mJ/cm2 @ 200nsec	3.5 J/cm2 @ 200nsec	3.5 J/cm2 @ 200nsec
CW	40 watts/cm2	80 watts/cm2	250 watts/cm2