Grating

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Technical specifications

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Common grating specifications

6 entries

Grating: Common grating specifications
Parameter	Specification
Substrate	Float glass
Surface quality	60/40
Dimensional tolerance	±0.5 mm
Diffraction efficiency	60–80% at the blaze wavelength
Pulsed damage threshold	350 mJ/cm² at 200 ns
CW damage threshold	40 W/cm²

Reflective diffraction gratings

19 entries

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Grating: Reflective diffraction gratings
Model	Groove density (lines/mm)	Blaze wavelength (nm)	Blaze angle	Dimensions (mm)
G-600-250-12.7	600	250	4°18′	12.7 × 12.7 × 6
G-600-500-12.7	600	500	8°37′	25 × 25 × 10
G-600-500-25	600	500	8°37′	25 × 25 × 10
G-600-640-25	600	640	11°4′	12.7 × 12.7 × 6
G-600-750-12.7	600	750	13°0′	12.7 × 12.7 × 6
G-600-750-25	600	750	13°0′	25 × 25 × 10
G-600-1000-25	600	1000	17°27′	25 × 25 × 10
G-1200-250-25	1200	250	8°37′	25 × 25 × 10
G-1200-300-12.7	1200	300	10°22′	12.7 × 12.7 × 6
G-1200-500-25	1200	500	17°27′	25 × 25 × 10
G-1200-640-25	1200	640	22°35′	25 × 25 × 10
G-1200-750-25	1200	750	26°44′	25 × 25 × 10
G-1200-1000-25	1200	1000	36°52′	25 × 25 × 10
G-1800-250-12.7	1800	250	13°0′	12.7 × 12.7 × 6
G-1800-300-25	1800	300	15°40′	25 × 25 × 10
G-1800-500-25	1800	500	26°44′	25 × 25 × 10
G-2400-250-12.7	2400	250	17°27′	12.7 × 12.7 × 6
G-2400-250-25	2400	250	17°27′	25 × 25 × 10
G-3600-200-25	3600	200	21°6′	25 × 25 × 10

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What to specify

Share these details with your enquiry so we can match the component to your optical setup.

01Operating wavelength, beam diameter and continuous or pulsed power.
02Required beam geometry, aperture, coating and polarization.
03Working distance, mechanical envelope and mounting interface.

Technical FAQ

Configuration questions for Grating

What size is the Grating?

Dimensional tolerance: ±0.5 mm. Clear aperture is smaller than the physical part, and the mount that holds it takes more again. Size the optic from the beam diameter at that plane, including the margin the mount consumes.

How much optical power can the Grating take?

Diffraction efficiency: 60–80% at the blaze wavelength · Pulsed damage threshold: 350 mJ/cm² at 200 ns. Damage thresholds are quoted for a pulse duration, wavelength and beam diameter. Scale them to your own conditions rather than reading the headline figure as a rating.

What is the Grating made from?

Substrate: Float glass · Surface quality: 60/40. Substrate and coating decide thermal behaviour and cleaning method as much as optical performance. Confirm both before the optic enters a high-average-power or vacuum path.