Special Grating

Gratings for Space Flight Projects GOME Spectrometer (ERS 2 Satellite), 1993 Galileo Avionica, Florence, Italy 2 sets of 4 plane holographic ionbeam blazed gratings for 4 spectral channels channel #1 #2 #3 #4 spectral range [nm] 230 - 320 260 - 420 380 - 620 550 - 800 groove density [l/mm] 3600 2400 1200 1200 blaze angle [deg] 30 23 19 26 grating area [mm] Ø 35 Ø 50 Ø 44 Ø 44 ORFEUS II Spectrometer (Astrospas), 1993 Landessternwarte Heidelberg, Heidelberg, Germany 1 spherical holographic ionbeam etched laminar grating VIMS Imaging Spectrometer (Cassini Mission), 1995 Galileo Avionica, Florence, Italy 4 convex holographic ionbeam etched laminar gratings GOMOS Spectrometer, 1996 Spacebel, Liège, Belgium 2 plane mechanically ruled blazed grating FUV-Spectrometer (IMAGE-SI), 1997 University of California, Berkeley, USA Centre Spacial de Liège, Liège, Belgium 2 spherical holographic ionbeam blazed gratings spectral range [nm] 121.6 groove density [l/mm] 3600 blaze angle [deg] 13.4 spherical radius [mm] 1000.24 grating area [mm] 164 x 142 weight relief structure on back face VIRTIS-M, UV-IR Imaging Spectrometer (Rosetta Mission), 1997 University of Lecce and Galileo Avionica, Florence, Italy 2 convex holographic ionbeam etched gratings, 2 grating zones on one substrate VIS channel laminar grating on central zone spectral range [nm] 250 - 1000, -1st order groove density [l/mm] 269 groove depth [nm] 240 and 430 in two ring zones IR channel blazed grating on outer ring zone spectral range 1 - 5 µm, 1st order groove density [l/mm] 54 blaze angle [deg] 3 to 10, continuous variation grating area [mm] Ø 25 spherical radius [mm] -79 J-PEX Soft X-Ray Spectrometer, 1998 Naval Research Laboratory, Space Sciences Division, Washington, USA 4 spherical holographic ionbeam etched laminar gratings spectral range [nm] 22 - 25 groove density [l/mm] 3600 grating area [mm] 80 x 150 spherical radius [mm] 4000 VIRTIS-H IR Spectrometer (Rosetta Mission), 1998 Observatoire Paris Meudon, DESPA, Paris, France 2 mechanically ruled echelle gratings TIMED GUVI Spectrometer, 1998 Applied Physics Laboratory, Johns Hopkins University, Laurel, USA 2 toroidal holographic ionbeam etched laminar gratings as replica spectral range [nm] 110 - 180 groove density [l/mm] 1200 groove depth / width [nm] 36.1 / 417 grating area [mm] 68 x 52 toroidal radii [mm] 193.7, 200.0 (+/-0.06) SWIR and VNIR Spectrometer, 1999 Science Applications International Corporation, San Diego, USA 4 convex replica gratings from holographic, ionbeam etched laminar master gratings with aberration correction OMI-EOS Optical Bench, 2000 TNO Institute of Applied Physics, Delft, The Netherlands 6 plane holographic ionbeam blazed gratings for 2 spectral channels channel #1 #2 spectral range [nm] 350 - 550 270 - 380 groove density [l/mm] 1350 2880 blaze angle [deg] 18 22 grating area [mm] Ø 44 Ø 28 GOME Spectrometer, 2001 - 2006 Galileo Avionica, Florence, Italy 4 sets of 4 plane holographic ionbeam blazed gratings for 4 spectral channels channel #1 #2 #3 #4 spectral range [nm] 230 - 320 260 - 420 380 - 620 550 - 800 groove density [l/mm] 3600 2400 1200 1200 blaze angle [deg] 30 23 19 26 grating area [mm] Ø 35 Ø 50 Ø 44 Ø 44 EIS Spectrometer, 2002 Naval Research Laboratory, Space Science Division, Washington, USA 2 toroidal holographic ionbeam etched laminar gratings spectral range [nm] 17 - 29 groove density [l/mm] 4200 groove depth / width [nm] 6.7 / 136 grating area [mm] Ø 90 toroidal radii [mm] 1178.10, 1182.87 (Rc/Rd +/- 0.0001) FIMS Spectrometer, 2002 Space Sciences Laboratory, University of California, Berkeley, USA Korea Advanced Institute of Science and Technology, Korea Korea Astronomy Observatory, Korea 2 ellipsoidal holographic ionbeam blazed gratings for 2 spectral channels channel #1 #2 spectral range [nm] 133-175, 1st order 90 - 115, 2nd order groove density [l/mm] 3000 2250 blaze angle [deg] 13.6 13.6 grating area [mm] 88 x 50 88 x 53 ellipsoidal radii [mm] 180.0, 242.6 180.0, 242.6 EUNIS Spectrometer, 2003 NASA Goddard Space Flight Center, Greenbelt, USA 4 toroidal holographic ionbeam blazed gratings spectral range [nm] 1st order: 27 - 41, 2nd order: 17 - 21 groove density [l/mm] 3600 blaze angle [deg] 3.7 grating area [mm] 60 x 90 toroidal radii [mm] 767.12, 772.23 (Rc/Rd +/- 0.0001) VIRTIS-VEX, UV-IR Imaging Spectrometer (VENUS EXPRESS Mission), 2004 Galileo Avionica, Florence, Italy 2 convex holographic ionbeam etched gratings, 2 grating zones on one substrate VIS channel laminar grating on central zone spectral range [nm] 250 - 1000, -1st order groove density [l/mm] 269 groove depth [nm] 240 and 430 in two ring zones IR channel blazed grating on outer ring zone spectral range 1 - 5 µm, 1st order groove density [l/mm] 54 blaze angle [deg] 3 to 10, continuous variation grating area [mm] Ø 25 spherical radius [mm] -79 MOSES Spectrometer, 2004 Montana State University, Department of Physics, Bozeman, USA 2 spherical holographic ionbeam etched laminar gratings VIRTIS-DAWN, UV-IR Imaging Spectrometer (DAWN Mission), 2004 Galileo Avionica, Florence, Italy 2 convex holographic ionbeam etched gratings, 2 grating zones on one substrate VIS channel laminar grating on central zone spectral range [nm] 250 - 1000, -1st order groove density [l/mm] 269 groove depth [nm] 240 and 430 in two ring zones IR channel blazed grating on outer ring zone spectral range 1 - 5 µm, 1st order groove density [l/mm] 54 blaze angle [deg] 3 to 10, continuous variation grating area [mm] Ø 25 spherical radius [mm] -79 SSUSI UVI Spectrometer, 2004 Applied Physics Laboratory, Johns Hopkins University, Laurel, USA 5 toroidal holographic ionbeam blazed gratings as replica spectral range [nm] 120 - 180 groove density [l/mm] 1200 blaze angle [deg] 7.6 grating area [mm] 68 x 52 toroidal radii [mm] 193.7, 200.0 (+/- 0.06) EUNIS-3 Spectrometer, 2004 NASA Goddard Space Flight Center, Greenbelt, USA 1 toroidal holographic ionbeam blazed grating with aberration correction spectral range [nm] 52.4 - 63 groove density [l/mm] 2340 blaze angle [deg] 3.7 grating area [mm] 70 x 65 toroidal radii [mm] 767.12, 772.23 (Rc/Rd +/- 0.0001) J-PEX-3 Soft X-Ray Spectrometer, 2005 Naval Research Laboratory, Space Sciences Division, Washington, USA 4 off-axis parabolic holographic ionbeam blazed gratings spectral range [nm] 22 - 25 groove density [l/mm] 3600 diffraction order 2 blaze angle [deg] 2.4 grating area [mm] 75 x 155 parabolic focal length [mm] 2000 mm MIRI, 2006 Astron, Dwingelo, Netherlands 12 mechanically ruled, plane, blazed spectrometer gratings spectral range [µm] 4.092 – 29.70 groove density [l/mm] 52.55 – 266.67 diffraction order 1 blaze angle [deg] 40 grating area [mm] typically 60 x 30 NIRSPEC, 2006 EADS Astrium, Munich, Germany 6 mechanically ruled, plane, blazed spectrometer gratings spectral range [µm] 1 - 5 groove density [l/mm] 34 – 252 diffraction order 1 blaze angle [deg] 4.3 - 8.8 grating area [mm] 69 x 71

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