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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, making them ideal for low light level applications such as Raman and NIR spectroscopy. We trust their performance so much that we place them at the heart of all we design, why not do the same.

Features & Benefits

  • •

    Patented broad bandwidth grating designs

  • •

    Exceptional 1st order diffraction efficiency

  • •

    Low polarization sensitivity, uniform efficiency

  • •

    Near-zero scatter for less stray light

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    Robust design allows easy cleaning & handling

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    Wavelengths: 300-2500 nm

  • •

    Line densities: 150-5500 lines/mm

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 & angular range
Design Bandwidth
535 – 635 nm
Diffraction Efficiency

≥ 85%

Spatial Frequency

2400 ± 1 lines/mm

Angle of Incidence

45°

Sizes Available (-xx)

16.2 x 22.2 x 2 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 & angular range

Nominal Wavelength

800 – 930 nm
Diffraction Efficiency
> 88%

Spatial Frequency

1624 ± 1 lines/mm

Angle of Incidence

45°

Sizes Available (-xx)

20 x 30 x 4 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 & angular range

Nominal Wavelength

790 – 960 nm
Diffraction Efficiency
> 86%

Spatial Frequency

1600 ± 1 lines/mm

Angle of Incidence

45°

Sizes Available (-xx)

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 & angular range

Design Graphs

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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.