VPH Spectroscopy Transmission Gratings

Exceptional first-order efficiency, low stray light, VPH gratings

World Leading Raman Grating Supplier

Ideal for when light is precious

As a world-renowned manufacturer of high throughput, low stray light spectrometers, we know what aspects of a gratings performance really matter, namely, high efficiency and low stray light. Our VPH transmission gratings offer both key performance criteria, in a robust, non-replicated, reliable, easy to handle package.

 We trust the gratings performance so much, we place them at the heart of all Wasatch Raman spectrometers.

Features & Benefits

  • •

    Excellent first-order diffraction efficiency
  • •

    Patented broad-bandwidth grating designs
  • •

    Low polarization sensitivity and uniform efficiency
  • •

    Near-zero scatter for reduced stray light
  • •

    Robust design for easy cleaning and handling
  • •

    Field-proven Raman grating performance

High-efficiency, low-stray-light VPH transmission gratings are ideal for demanding applications such as Raman and NIR spectroscopy.

Typical Spectroscopy Grating Specifications

WP-2400/589-xx

WP-HD1624/871-xx

WP-HD1600/884-xx

Design Bandwidth

535–635 nm

800–930 nm

790–960 nm

Diffraction Efficiency 

≥ 85%

> 88%
> 86%
Spatial Frequency
2400 ± 1 lines/mm
1624 ± 1 lines/mm
1600 ± 1 lines/mm
Angle of Incidence
45°
45°
45°

Sizes Available (-xx)

16.2 x 22.2 x 2 mm
20 x 30 x 4 mm
46 x 62 x 6 mm
Wavefront Distortion
< λ/5 rms @ 633 nm over a 25 mm diameter
Surface Quality

60–40 scratch-dig

AR Coating

Optimized for the specified wavelength and angular range

Design Graphs

Misty Johnson

Misty Johnson is responsible for taking care of our grating customers at the Logan, Utah, facility. She has been a member of the Wasatch Photonics team since 2009. By understanding her customers’ needs and goals, as well as the current grating market, Misty is able to provide a superior level of customer support. As Account Manager, she acts as a liaison between customers and Wasatch Photonics’ manufacturing department making sure that the lines of communication are always open.

Customer support is an integral part of Wasatch Photonics commitment to customers. Whether you are in the market to purchase a single grating, inquiring as a distributor, or purchasing large volume, Misty will guide you seamlessly through the custom design process. Misty strives to build trust and strong long term relationships with Wasatch Photonics customers. She brings 20 years’ experience as customer support manager from a number of manufacturing and service companies.