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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 20 — Jul. 10, 2012
  • pp: 4684–4690

Approaching ultimate resolution for soft x-ray spectrometers

Sorin G. Chiuzbăian, Coryn F. Hague, and Jan Lüning  »View Author Affiliations


Applied Optics, Vol. 51, Issue 20, pp. 4684-4690 (2012)
http://dx.doi.org/10.1364/AO.51.004684


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Abstract

We explore the potential performance of soft x-ray spectrometers based on the use of varied-line-spacing spherical diffraction gratings (VLS-SG). The quantitative assessment is based on an optimization procedure to obtain both negligible optical aberrations at full illumination of the grating and a quasi linear focal curve. It involves high-order optical aberration cancellation to calculate the focal curves. We also examine the validity of small divergence closed-form formulas describing the light path function. Optimizing the optical and geometric parameters gives an ultimate resolving power, at 930 eV, of between 10 800 for a 3 m long instrument and 34 000 for an 11 m spectrometer according to the Rayleigh criterion. Typical fabrication tolerances would scale these values down by about 10%. The findings are validated by ray-tracing simulations.

© 2012 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6190) Spectroscopy : Spectrometers

ToC Category:
Spectroscopy

History
Original Manuscript: April 9, 2012
Manuscript Accepted: May 9, 2012
Published: July 3, 2012

Citation
Sorin G. Chiuzbăian, Coryn F. Hague, and Jan Lüning, "Approaching ultimate resolution for soft x-ray spectrometers," Appl. Opt. 51, 4684-4690 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-20-4684

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