VPH Astronomy Gratings
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See the Universe in Exquisite Spectral Detail
Making the most of every photon
Features & Benefits
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Excellent 1st order diffraction efficiency -
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Broad operational bandwidth with angle tuning -
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Customizable in wavelength (320-2500 nm) & dispersion (150-6000 lines/mm) -
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Dimensions up to 300 mm; larger upon request -
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Multiple patented design technologies -
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Low polarization sensitivity, uniform efficiency -
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Robust design facilitates cleaning & handling
Angle Tuning to Span the Full Spectrum
Superblazed Astronomy Gratings
Angle tuning to span the full spectrum
Volume phase holographic (VPH) gratings made from dichromated gelatin (DCG) have been key components in astronomical spectrographs for decades. Wasatch Photonics is committed to maximizing light throughput and quality through our VPH DCG gratings as we have done in many of the world’s largest telescopes.
VPH gratings can be optimized to work at wavelengths ranging from ~300 nm up to ~2500 nm with spatial frequencies less than 10 l/mm using our (LD) grating technology to over 5000 l/mm using super critical angle (SCA) grisms. By varying the angle of incidence of a VPH grating, the spectral response can often be broadened considerably using superblazing.
Ready to Start Your Project?
Not sure where to start? Use our grating calculator, submit your parameters or custom design, and let our experts handle the rest.