HORIBA Scientific proposes large size Transmission Holographic Fused Silica Etched (FSE) gratings or Ruled blazed reflection gratings for Astronomy.
Both technologies offer a very high efficiency, low polarization dependence and low angular sensitivity.
Features
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Holographic Transmission Etched Gratings
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Ruled Blazed Reflexion Gratings
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- Ideal alternative to VPHG gratings
- Groove density : up to ~4000gr/mm
- Dimensions : up to 500mm
- Substrate material : IR Fused Silica
- Substrate thickness : ~15mm
- Grism or Plane Grating
- High efficiency and uniformity
- Low polarization dependence
- High Wavefront quality
- Single-side AR coating
- Cryogenic compatibility
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- Master or replica Gratings
- Groove density : up to ~900gr/mm
- Dimensions : up to 140mm
- High efficiency and uniformity
- Low polarization dependence
- High Wavefront quality
- Long life time Gold coating
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Specifications
To help us to check the feasibility of your grating, please share the grating specifications :
ㆍ Grating type (transmission or reflexion)
ㆍ Substrate size
ㆍ Useful area
ㆍ Groove density
ㆍ Expected efficiency
ㆍ Wavefront quality
ㆍ Spectral range
ㆍ Angle of incidence
ㆍ Environmental conditions