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All Products / Optics / Diffraction Gratings / Echelle Reflective Gratings / Richardson Gratings™ Echelle Reflective Diffraction Gratings
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Richardson Gratings™ 79 Grooves, 25 x 50mm, 74° Blaze Angle, Echelle Grating

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Richardson Gratings™ Echelle Reflective Diffraction Gratings
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Stock #15-743 In Stock
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C$406.00
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C$406.00
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Centering of Ruled Area on Substrate (mm):
±1
Groove Spacing Tolerance (%):
<0.05
Master Reference:
402E
Spectral Order (m):
98

Product Details

Type:
Echelle Grating

Physical & Mechanical Properties

Dimensions (mm):
25.0 x 50.0 ±0.1
Clear Aperture (%):
>90
Construction:
Ruled Grating
Length (mm):
50.00
Thickness (mm):
6.00 ±0.5
Width (mm):
25.00
Alignment of Grooves to Edge (°):
±0.15

Optical Properties

Groove Density (grooves/mm):
79
Blaze Wavelength (nm):
All
Blaze Angle (°):
74
Coating:
Aluminium
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Float Glass
Reflected Wavefront, RMS:
λ/4
Polarization:
Unpolarized

Regulatory Compliance

RoHS:
Compliant
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Certificate of Conformance:
View
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Product Family Description

  • Highest Resolving Power and Dispersion
  • Low Groove Density for Use in Higher Orders
  • Groove Spacing Tolerance <0.05%
  • Custom Sizes Available

Richardson Gratings™ Echelle Reflective Diffraction Gratings feature superior resolving power and dispersion compared to other reflective diffraction gratings. These gratings are characterized by coarse groove spacings, relatively low groove densities and high blaze angles. They are suitable for use from near-UV wavelengths to the infrared (~20μm). Richardson Gratings™ Echelle Reflective Diffraction Gratings are ideal for applications such as compact high resolution spectrometers with high angular dispersion and throughput. Custom sizes are available on request.

Note: The surface of these gratings is very sensitive and should never be touched when handling the optic. If cleaning is required to remove dust particles, non-contact cleaning using clean compressed air is recommended.