Broadband astigmatism-free Czerny-Turner imaging spectrometer using spherical mirrors
Applied Optics, Vol. 48, Issue 19, pp. 3846-3853 (2009)
http://dx.doi.org/10.1364/AO.48.003846
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Abstract
We describe the elimination of the astigmatism of a Czerny–Turner imaging spectrometer, built using spherical optics and a plane grating, over a broad spectral region. Starting with the principle of divergent illumination of the grating, which removes astigmatism at one chosen wavelength, we obtain design equations for the distance from the grating to the focusing mirror and the detector angle that remove the astigmatism to first order in wavelength. Experimentally, we demonstrate near diffraction-limited performance from 740 to 860 nm and over a
© 2009 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6190) Spectroscopy : Spectrometers
(320.7100) Ultrafast optics : Ultrafast measurements
ToC Category:
Spectroscopy
History
Original Manuscript: April 13, 2009
Manuscript Accepted: May 4, 2009
Published: June 30, 2009
Citation
Dane R. Austin, Tobias Witting, and Ian A. Walmsley, "Broadband astigmatism-free Czerny-Turner imaging spectrometer using spherical mirrors," Appl. Opt. 48, 3846-3853 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-19-3846
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