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VPH Gratings for Astronomy

Just as every star is unique, so are the needs of every spectroscopic telescope. At Wasatch Photonics, we work with you from the earliest stages of your project, drawing on our multiple design technologies and experience to create high throughput medium- to large-format volume phase holographic (VPH) gratings customized to your astronomical spectrograph. Our robust, durable gratings provide the broadband operation and tunability you need for maximum flexibility, and years of performance you can depend on.



  • Excellent 1st order diffraction efficiency
  • Broad operational bandwidth with angle tuning
  • Customizable in wavelength (350-2500 nm) and dispersion
    (150-6000 lines/mm)
  • Dimensions up to 300 mm; larger upon request
  • Multiple patented design technologies
  • Low polarization sensitivity, uniform efficiency
  • Robust design facilitates cleaning & handling

We’ve developed and patented multiple design technologies to optimize VPH gratings for bandwidth, polarization insensitivity & transmission, adapting them to the needs of astronomy gratings through years of accumulated expertise in our on-site large-format imaging lab. Whether you’re studying chemical composition, distance, velocity, density, or temperature of celestial objects, we can create the gratings you need.



At Wasatch Photonics, we understand the processes and metrology needed to manufacture & test high quality gratings for use in spectroscopic telescopes, and have contributed gratings for many multi-object spectrographs. Each individual VPH grating is an original, allowing us to customize its performance to your exact specifications. Our engineers personally oversee your gratings from design to shipment, providing dedication and focus commensurate with the scale of your project.