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Photonics Buyers' Guide
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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.
Optometrics Corporation, A Dynasil Co. - Littleton, MA
Precision design and production of master and replicated gratings since 1967. OEM, custom and catalog. Capabilities include ruled, holographic, planar, concave, convex, reflection, transmission, blazed, bi-zonal. Excellent quality, service and cost. Request a quote today!
Spectrogon US, Inc., Sub. of Spectrogon AB - Mountain Lakes, NJ
Designer 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...
GratingWorks, USA - Acton, MA
Designer 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...
Hellma USA, Inc., Sub. of Hellma GmbH & Co. KG - Plainview, NY
Manufactures 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...
Max Levy Autograph, Inc., Sub. of II-VI Incorporated - Philadelphia, PA
Max Levy Autograph, Inc. (MLA), a subsidiary of II-VI Incorporated, is a manufacturer of high precision, tight-tolerance patterns on optical, metal, ceramic, and various other substrates. Advanced patterning technologies are used to delineate patterns in substrates for resolution targets, machine...
OPCO Laboratory, Inc. - Fitchburg, MA
Full 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,...
IMT Masken und Teilungen AG, Sub. of Heidenhain Group - Greifensee, Switzerland
Spectrum Scientific, Inc. - Irvine, CA
Alrad Instruments Ltd. - Newbury, England
Bach Research Corp. - Boulder, CO
BEAM Engineering for Advanced Measurements Co. - Winter Park, FL
Broadex Technologies Co. Ltd. - Shanghai, China
Changchun Fortune Optronics, Inc. - Changchun, China
Creative Microsystems Corp. - Waitsfield, VT
DigitalOptics Corp., Sub. of Tessera Technologies Inc. - Charlotte, NC
GrayGlass Co., Div. of O'Bryan Glass Corp. - Queens Village, NY
Headwall Photonics, Inc. - Fitchburg, MA
Hitachi High Technologies America, Inc., A Hitachi Co., Life Sciences Div. - Dallas, TX
Holo/Or Ltd. - Nes Tziona, Israel
Holographix LLC - Hudson, MA
Ibsen Photonics A/S - Farum, Denmark
IMT North America Inc., Sub. of IMT Masken und Teilungen AG - West Wyoming, PA
JENOPTIK Optical Systems GmbH, Sub. of JENOPTIK AG, Microoptics Business Unit - Jena, Germany
Laser Optical Engineering Ltd. - East Midlands Airport, England
LightSmyth Technologies, Inc. - Eugene, OR
Medway Optics Ltd. - Rainham, England
Nalux Co., Ltd. - Osaka, Japan
OptiGrate Corp. - Oviedo, FL
Osela Inc. - Lachine, Canada
Photo Sciences, Inc. - Torrance, CA
Plymouth Grating Laboratory, Inc. - Carver, MA
PTR Optics Ltd. - Nottingham, England
R&G Co. - Vilnius, Lithuania
Richardson Gratings, Bus. Unit of Newport Corp. - Rochester, NY
Shimadzu Corp. - Tokyo, Japan
Spectrogon AB - Taby, Sweden
Spectrogon UK Ltd., Sub. of Spectrogon AB - Glenrothes, Scotland
Wasatch Photonics, Inc. - Logan, UT
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...
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...
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...
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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