VPH Grating Technologies

More design technologies = a perfect fit

Volume phase holographic (VPH) gratings offer up to 40% greater efficiency than surface relief gratings, and enable more compact, transmissive designs. Our proprietary process encapsulates the grating structure between two AR coated surfaces for easy cleaning & handling. We utilize three distinct design technologies to optimize our gratings to your needs, backed by over 20 years of manufacturing experience.

High Dispersion HD Gratings

  • Exclusive, patented design – only from Wasatch Photonics
  • High transmission over bandwidths up to 200 nm
  • Low polarization sensitivity, smoothly varying efficiency
  • Enables faster, smaller, sensitive OCT spectrometers
  • Increased throughput for spectroscopy & astronomy
  • Customizable for AOI’s >36° and wavelengths 300-2500 nm

High Transmission Dickson Gratings

  • We are the original patent holders & experts on this design!
  • Extremely high transmission over bandwidths of 20-60 nm
  • High efficiency for s- & p-polarization, varying smoothly
  • Ideal for astronomy: supports angle tuning & large sizes
  • Do high-res spectroscopy with low polarization sensitivity
  • Customizable for AOI’s >36° and wavelengths 300-2500 nm

Broadband/ S-POL/ P-POL GRATINGS

  • Capable of very high transmission at a single polarization
  • Alternate design: broad bandwidth, polarization insensitive
  • Can be manufactured in dimensions up to 300 mm or larger
  • Good for astronomy, hyperspectral imaging & laser filtering
  • Low beam distortion & scatter for laser pulse compression
  • Customizable for many AOI’s and wavelengths 300-2500 nm

OEM & CUSTOM GRATING DESIGN

At Wasatch Photonics, we apply our deep understanding of optical design to support our R&D and OEM customers in creating smaller, more sensitive, cost-effective instruments for a diverse range of applications. With over 15 years of manufacturing experience and extensive in-house processing & metrology capabilities, we have the resources to provide you with high quality, premier performance gratings customized and AR-coated to your specific needs. Contact us today to get started!

Author: Cicely Rathmell, MSc

Cicely Rathmell, MSc is a seasoned science communicator and marketing professional with a strong academic background in chemistry and physics and over 25 years of experience in the photonics industry. As VP of Marketing at Wasatch Photonics, she applies her technical expertise and industry insight to make advanced spectroscopy and optical technologies accessible and impactful for researchers and innovators.