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Applied Optics

Applied Optics


  • Vol. 43, Iss. 7 — Mar. 1, 2004
  • pp: 1463–1471

Normal-Incidence Efficiencies of Multilayer-Coated Laminar Gratings for the Extreme-Ultraviolet Imaging Spectrometer on the Solar-B Mission

John F. Seely, Charles M. Brown, David L. Windt, Soizik Donguy, and Benjawan Kjornrattanawanich  »View Author Affiliations

Applied Optics, Vol. 43, Issue 7, pp. 1463-1471 (2004)

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The normal-incidence efficiencies of two laminar gratings and the reflectances of two parabolic mirrors with matching multilayer coatings were measured by monochromatic synchrotron radiation and were compared with modeling calculations. These optics were developed for the Extreme-Ultraviolet Imaging Spectrometer to be launched on the Japanese Solar-B mission. Each optic has two sectors coated with Mo/Si multilayers that reflect the 17–21-nm and 25–29-nm wave bands at normal incidence. The measured peak grating efficiencies are in the 8%–12% range and are in good agreement with efficiency calculations that account for the effects of groove profile and the microroughness as determined by atomic force microscopy.

© 2004 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(310.1620) Thin films : Interference coatings

John F. Seely, Charles M. Brown, David L. Windt, Soizik Donguy, and Benjawan Kjornrattanawanich, "Normal-Incidence Efficiencies of Multilayer-Coated Laminar Gratings for the Extreme-Ultraviolet Imaging Spectrometer on the Solar-B Mission," Appl. Opt. 43, 1463-1471 (2004)

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  1. J. F. Seely, “Review of multilayer normal-incidence gratings operating at 9 nm–40 nm wavelengths,” in X-Ray Mirrors, Crystals, and Multilayers II, A. Freund, A. Macrander, T. Ishikawa, and J. Wood, eds., Proc. SPIE 4782, 224–229 (2002).
  2. L. Goray and J. Seely, “Efficiencies of master, replica, and multilayer gratings for the soft x-ray-extreme ultraviolet range: modeling based on the modified integral method and comparisons with measurements,” Appl. Opt. 41, 1434–1445 (2002).
  3. J. Seely, “Multilayer grating for the extreme ultraviolet spectrometer (EIS),” in X-Ray Optics, Instruments, and Missions IV, R. Hoover and A. Walker, eds., Proc. SPIE 4138, 174–181 (2000).
  4. C. Korendyke, C. Brown, J. Seely, and S. Meyers, “International collaboration yields a high-performance EUV spectrometer for the Solar-B spacecraft,” OE Mag. 2, 23–26 (2002).
  5. L. Goray, International Intellectual Group Inc., P.O. Box 335, Penfield, N.Y. 14526, www.pcgrate.com.
  6. J. F. Seely, M. P. Kowalski, R. G. Cruddace, K. F. Heidemann, U. Heinzmann, U. Kleineberg, K. Osterried, D. Menke, J. C. Rife, and W. R. Hunter, “Multilayer-coated laminar grating with 16% normal-incidence efficiency in the 150-Å region,” Appl. Opt. 36, 8206–8213 (1997).
  7. M. P. Kowalski, T. W. Barbee, K. F. Heidemann, H. Gursky, J. C. Rife, W. R. Hunter, G. G. Fritz, and R. C. Cruddace, “Efficiency calibration of the first multilayer-coated holographic ion-etched flight grating for a sounding rocket high-resolution spectrometer,” Appl. Opt. 38, 6487–6493 (1999).
  8. D. L. Windt, S. Donguy, J. Seely, B. Kjornrattanawanich, E. Gullikson, C. Walton, L. Golub, and E. DeLuca, “EUV multilayers for solar physics,” in Optics for EUV, X-Ray, and Gamma-Ray Astronomy, O. Citterio and S. O’Dell, eds., Proc. SPIE 5168, 1–11 (2003).
  9. D. L. Windt, S. Donguy, J. Seely, and B. Kjornrattanawanich, “Experimental comparison of extreme-ultraviolet multilayers for solar physics,” Appl. Opt., to be published.

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