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Plane Holographic Reflection Gratings

Plane Holographic Reflection Gratings
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Plane Holographic Reflection Gratings - 1

590 O p t i c s Phone: 1-800-222-6440 • Fax: 1-949-253-1680 WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Plane Holographic Reflection Gratings Generated optically, holographic gratings generally do not display periodic errors or ghosts often found in ruled gratings. They typically have a sinusoidal groove profile and are generated by the recording of an interference pattern onto a photoresist-coated substrate. Newport's holographic gratings can provide excellent wavefront flatness and high efficiency in a single plane of polarization. Blazed gratings are generated by bombarding holographically recorded masters with a beam of ions. This etching process alters the groove profile from sinusoidal to triangular, which often increases the peak efficiency of the grating. Like their ruled counterparts, holographic gratings are most effective when used in the Littrow configuration. • Groove frequencies ranging from 900 to 3600 g/mm • Blazed holographic gratings • High and low modulation depths • Aluminum coating • Float glass substrate • 12.5, 25, and 50 mm square sizes Ordering Information 100 90 80 70 60 50 40 30 20 10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 Wavelength (ìm) ––– S - Plane - - - P - Plane Reflectance of Aluminum Efficiency (%) Plane Holographic Reflection Grating, 1800 g/mm, high modulation, 350-900 nm recommended spectral range, aluminum coating Shown here is an example of an efficiency curve for our plane ruled reflection gratings. A complete set of curves are available on our website. Note: Many of these curves are relative (not absolute). They are only representative, and can vary significantly depending on use geometry and measurement technique. Two masters with the same catalog number may have different efficiency curves. Grooves per mm Spectral Region (nm) Wavelength of Max Efficiency (nm) Blazed or Modulation Coating Model Model Model 12.5 x 12.5 x 6 mm 25 x 25 x 6 mm 50 x 50 x 6 mm 3600 180-500 300 high modulation Al 05HG3600-300-1 10HG3600-300-1 20HG3600-300-1 2400 190-800 250 blazed Al 05HG2400-250-1 10HG2400-250-1 20HG2400-250-1 2400 250-600 400 high modulation Al 05HG2400-400-1 10HG2400-400-1 20HG2400-400-1 2000 300-950 475 high modulation Al 05HG2000-475-1 10HG2000-475-1 20HG2000-475-1 1800 190-900 250 blazed Al 05HG1800-250-1 10HG1800-250-1 20HG1800-250-1 1800 200-900 300 low modulation Al 05HG1800-300-1 10HG1800-300-1 20HG1800-300-1 1800 350-900 500 high modulation Al 05HG1800-500-1 10HG1800-500-1 20HG1800-500-1 1500 250-1300 600 high modulation Al 05HG1500-600-1 10HG1500-600-1 20HG1500-600-1 1201.5 190-800 250 blazed Al 05HG1202-250-1 10HG1202-250-1 20HG1202-250-1 1200 500-1200 800 high modulation Al 05HG1200-800-1 10HG1200-800-1 20HG1200-800-1 1100 400-1700 900 high modulation Al 05HG1100-900-1 10HG1100-900-1 20HG1100-900-1 900 400-1700 800 high modulation Al 05HG900-800-1 10HG900-800-1 20HG900-800-1

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Plane Holographic Reflection Gratings
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