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With 59 Gratings-related patents, OFS is a leader in the creation and production of fiber Bragg gratings. We offer a full array of FBG types, such as Stablizer gratings, High Reflector Gratings, Wide Band gratings, Long Period gratings, and Fiber Arrays. We’ve developed capabilities for write-through coatings, where the acrylate does not need to be stripped from the fiber in order to write a grating, and we’ve recently developed the ability to write gratings in high-temperature fibers coated with our proprietary high-temperature PYROCOAT™ polyimide.
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As pioneers in the online monitoring of high power lasers, Gentec-EO brought you the benefits of holographic sampling without the vulnerability of the coatings usually used to make holographic components. Holographic sampling means you get spatially accurate samples of the beam, from as much as 10% to as low as 10-8% of the incident power. It means you get multiple samples at the same time. It means that the polarization in the samples is accurately preserved. It means that more than 99% of the beam continues straight through the HBS to your application. It means that vibration, temperature and humidity will not affect your measurement. Because of our proprietary and unique fabrication process, you get all this with a damage threshold as high as that of the bare fused silica itself!
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HORIBA Jobin Yvon's specialty gratings are found in cutting-edge scientific applications including ultrafast lasers, space flight instruments, astronomy, and synchrotron spectrometers. In addition, our high-volume replicated gratings are used in OEM instruments including spectrophotometers, bioanalyzers, and colorimeters. HORIBA Jobin Yvon's gratings for high volume OEM instruments can be found in our OEM Gratings catalog, while this catalog focuses on diffraction gratings for scientific and research applications.
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Holographic gratings for spectroscopic application.
Grating constants of up to 4000 lines/mm can be produced. Dimensions of up to 60 mm apertures with active optical wavelengths from 200 nm to 800 nm are available. These gratings show high performing surfaces with very precise line shapes and transmission for better spectral performance.
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This type of grating is the holographic counterpart of the classically ruled concave grating, invented by Rowland in the 19th century. The Rowland grating has straight grooves which are equally spaced along a chord of the concave surface.
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The rapid increase in the demand for greater transmission capacity, DWDM has emerged as the key transmission technique. There is continuous pressure to increase the number of DWDM channels and this in turn calls for improved performance from the passive multiplexing components.
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Laser tuning gratings are holographic gratings specially designed for wavelength tuning of lasers, such as dye lasers, Ti-sapphire, or external cavity diode lasers. The groove depth is optimized to yield maximum efficiency for one state of polarization.
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The gratings are holographically recorded with two highly collimated, clean and homogeneous beams, which give straight and equispaced grooves. The diffracted light from these gratings is free from ghost spectral lines. The randomly scattered light is as low as that from a good front surface aluminium mirror.
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These gratings are especially suited for use in laser pulse compression experiments. High diffraction efficiency, in combination with good spectral quality and high damage resistance makes these gratings useful in all kinds of laser pulse applications; both pulse compression using optical fibre grating pairs, and for amplification of pulses with chirped pulse amplification.
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Spectrogon manufacture high quality, holographically recorded, blazed profile gratings specifically for use in the UV region of the spectrum. These gratings are available in a range of groove densities between 300-2400 gr/mm. All are nominally blazed at 220 nm in the Littrow configuration. The processes used to manufacture these UV gratings were developed for use in making gratings for the soft x-ray region (1-10 nm) and are therefore designed to have very low stray and scattered light.
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| ... products without technical information |
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With 59 Gratings-related patents, OFS is a leader in the creation and production of fiber Bragg gratings. We offer a full array of FBG types, such as Stablizer gratings, High Reflector Gratings, Wide Band gratings, Long Period gratings, and Fiber Arrays. We’ve developed capabilities for write-through coatings, where the acrylate does not need to be stripped from the fiber in order to write a grating, and we’ve recently developed the ability to write gratings in high-temperature fibers coated with our proprietary high-temperature PYROCOAT™ polyimide.
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The rapid increase in the demand for greater transmission capacity, DWDM has emerged as the key transmission technique. There is continuous pressure to increase the number of DWDM channels and this in turn calls for improved performance from the passive multiplexing components.
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| ... products without technical information |
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