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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 19 — Jul. 1, 1999
  • pp: 4001–4003

Comparison of mechanically ruled versus holographically varied line-spacing gratings for a soft-x-ray flat-field spectrograph

Takashi Yamazaki, Eric Gullikson, Noboru Miyata, Masato Koike, Yoshihisa Harada, Stanley Mrowka, Ulf Kleineberg, James H. Underwood, Mihiro M. Yanagihara, and Kazuo Sano  »View Author Affiliations


Applied Optics, Vol. 38, Issue 19, pp. 4001-4003 (1999)
http://dx.doi.org/10.1364/AO.38.004001


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Abstract

Recent progress in the design of aspheric wave-front recording systems has permitted the manufacture of holographic gratings with highly variable groove densities that are suitable for flat-field spectrographs. A holographic grating thus recorded was processed to produce a laminar profile by use of reactive-ion etching. Measurements are reported of the absolute diffraction efficiency of this grating and of a comparable mechanically ruled grating. It is found that the holographic grating is much more effective in suppressing the higher orders. The spectral resolution was determined by use of a carbon Kα x-ray generator and a spectrograph with an imaging detector. The spectral resolution of the holographic grating was approximately 3 times worse than that of the ruled grating.

© 1999 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(090.2890) Holography : Holographic optical elements
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(220.1000) Optical design and fabrication : Aberration compensation
(260.7200) Physical optics : Ultraviolet, extreme

History
Original Manuscript: January 19, 1999
Revised Manuscript: April 8, 1999
Published: July 1, 1999

Citation
Takashi Yamazaki, Eric Gullikson, Noboru Miyata, Masato Koike, Yoshihisa Harada, Stanley Mrowka, Ulf Kleineberg, James H. Underwood, Mihiro M. Yanagihara, and Kazuo Sano, "Comparison of mechanically ruled versus holographically varied line-spacing gratings for a soft-x-ray flat-field spectrograph," Appl. Opt. 38, 4001-4003 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-19-4001

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