Diffraction Gratings | Photonics Buyers' Guide

Photonics Buyers' Guide > Diffraction Gratings

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(35 companies)

Diffraction Gratings A diffraction grating is a glass substrate carrying a layer of deposited aluminum that has been pressure-ruled with a large number of fine equidistant grooves, using a diamond edge as a tool. Light falling on such a grating is dispersed into a series of spectra on both sides of the incident beam, the angular dispersion being inversely proportional to the line spacing. By proper shaping of the diamond edge, however, the grooves can be formed in such a way as to concentrate most of the energy into a single spectral order; such a grating is said to be blazed. Cast replica gratings can be made in plastic or another substrate, the replica being used either as a transmitting grating or by aluminizing it, as a reflecting grating. Plane gratings require external optics to focus the spectral lines, but a grating ruled on a concave surface is self-focusing. See concave grating.

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Spectrogon US, Inc., Sub. of Spectrogon AB - Mountain Lakes, NJDesigner and manufacturer of interference filters: narrow and broad bandpass, long wave and short wave, ND filters, atmospheric windows, AR and metallic coatings. Holographic diffraction gratings: plano, concave and blazed, pulse compression/stretcher gratings. WDM and telecommunication...
- Manufacture Custom
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GratingWorks, USA - Acton, MADesigner and manufacturer of holographic diffraction gratings, spectrograph modules and mini spectrometers for analytical measurements in the UV, visible and NIR spectral regions. Products include planar, concave and convex gratings; single-, multichannel and image spectrograph modules, mini...
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- Manufacture Custom
- Design
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Hellma USA, Inc., Sub. of Hellma GmbH & Co. KG - Plainview, NYManufactures and supplies Hellma cells, fiber optic probes, photometric calibration standards, flat and cylindrical optics and accessories for lasers, spectrophotometers and fluorometers. Supplies Heraeus light sources including vacuum UV, deuterium, hollow cathode, PID spectral calibration and...
- Supply/Distribute
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Max Levy Autograph, Inc., Sub. of II-VI Incorporated - Philadelphia, PASpecializes in ultraprecision patterned components for the photonic, military/aerospace, semiconductor and metrology industries. Applications range from the x-ray out to infrared. Major manufacturing process capabilities include: photolithography, electroforming, photochemical etching, film...
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- Manufacture Custom
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OPCO Laboratory, Inc. - Fitchburg, MAFull service manufacturer of high precision custom optics, optical replication, diffraction gratings, electro-optical assemblies, metallic and dielectric thin-film coatings for prototype and high volume production. State-of-the-art manufacturing, coating, QC, assembly and class 1000 cleanrooms,...
- Manufacture Custom
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Optometrics Corp., A Dynasil Co. - Ayer, MAOptometrics is an ISO certified, lean manufacturer of custom advanced optical components and custom subassemblies to OEM instrument manufacturers for a wide range of spectroscopic, laser and wavelength selection applications. Products include diffraction gratings, interference filters, metallic and...
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ADDITIONAL COMPANIES

TERMS
diffraction grating A glass substrate carrying a layer of deposited aluminum that has been pressure-ruled with a large number of fine equidistant grooves, using a diamond edge as a tool. Light falling on such a grating is dispersed into a series of spectra on both...
grating A framework or latticework having an even arrangement of rods, or any other long narrow objects with interstices between them, used to disperse light or other radiation by interference between wave trains from the interstices. The ability of a...
holographic grating The generation of a grating on a blank by the holographic process. A series of interference fringes, corresponding to the grooves of the desired grating, are recorded on a photosensitive layer, and the subsequent chemical treatment forms a modulated...
grating substrate The substrate upon which a diffraction grating will be ruled. It must be dimensionally stable, and the surface must be polished to an accurate flat or spherical form as required by the grating. The substrate for a replica must have the identical but...

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