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Coherent® LightSmyth™ 1030nm, 1600 Grooves/mm, 120 x 20mm Transmission Diffraction Grating

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LightSmyth™ Transmission Diffraction Gratings

LightSmyth™ Transmission Diffraction Gratings

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Groove Density (grooves/mm):
Groove Density Uniformity (grooves/mm):
Design Wavelength DWL (nm):
1030 ±10
Minimum Efficiency (%):
≥94 @ 1030nm
Dimensions (mm):
120.00 x 20.00
Angle of Incidence (°):
55.5 ±1
Clear Aperture CA (mm):
115.00 x 18.00
Multi-Layer Dielectric Binary Etch Grating
Length (mm):
Model Number:
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Surface Quality:
Thickness (mm):
0.95 ±0.050
Transmission Diffraction Grating
Width (mm):
Alignment of Grooves to Edge (°):
0.1 (typical)
S-Polarization defined with E-field parallel to the grating grooves

Regulatory Compliance

Certificate of Conformance:

Product Family Description

  • High Diffraction Efficiency (>94% Absolute) and Low Scatter
  • Polarization Independent and Single Polarization Optimized Gratings
  • Robust Inorganic Materials for Superior Power Handling and Reliability
  • Designs for NIR Wavelengths between 800 - 1800nm

Coherent® LightSmyth™ Transmission Diffraction Gratings are manufactured through a precision lithographic wafer-scale fabrication process and provide excellent optical performance, low polarization sensitivity, and low scatter. These gratings have a high diffraction efficiency of ≥94%, minimizing optical losses when used in multi-pass configurations. Gratings designed for near infrared (NIR) wavelengths between 800 - 1800nm are available with all featuring a precision line density uniformity of 0.001 lines/mm. Coherent® LightSmyth™ Transmission Diffraction Gratings are used in demanding applications including Spectral Beam Combining (SBC), LiDAR, optical telecommunications, pulse compression of pico- and femtosecond pulses, and spectroscopy. These gratings contain no organic materials and can be used with high power lasers and in environments up to 500 °C with no effects on performance. Please contact us for custom sizes or OEM requirements.

Note: II-VI Incorporated is now Coherent Corp.