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Applied Optics

Applied Optics


  • Vol. 37, Iss. 28 — Oct. 1, 1998
  • pp: 6803–6810

Design of a high-resolution extreme-ultraviolet imaging spectrometer with aberration-corrected concave gratings

Tatsuo Harada, Hideo Sakuma, Kaoru Takahashi, Tetsuya Watanabe, Hirohisa Hara, and Toshiaki Kita  »View Author Affiliations

Applied Optics, Vol. 37, Issue 28, pp. 6803-6810 (1998)

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A high-resolution extreme-ultraviolet imaging spectrometer is designed for the Japanese solar mission Solar-B. A spherical varied-line-space (SVLS) grating and a toroidal uniform-line-space (TULS) grating are chosen as candidates for use in the spectrometer to yield high spectral and spatial resolution within the spectral range 25–29 nm. The spectral image-focusing properties and the mechanical tolerances for fabrication and alignment are compared for the two types of grating. The SVLS design is found to be superior to the TULS design for off-plane spectral images and in ease of fabrication and optical alignment.

© 1998 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(220.1000) Optical design and fabrication : Aberration compensation
(220.1250) Optical design and fabrication : Aspherics

Original Manuscript: April 28, 1998
Revised Manuscript: July 6, 1998
Published: October 1, 1998

Tatsuo Harada, Hideo Sakuma, Kaoru Takahashi, Tetsuya Watanabe, Hirohisa Hara, and Toshiaki Kita, "Design of a high-resolution extreme-ultraviolet imaging spectrometer with aberration-corrected concave gratings," Appl. Opt. 37, 6803-6810 (1998)

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