Dispersion compensation in moving-optical-wedge Fourier transform spectrometer
Applied Optics, Vol. 48, Issue 20, pp. 3979-3987 (2009)
http://dx.doi.org/10.1364/AO.48.003979
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Abstract
In this paper we study the effect of material dispersion on the performance of a moving-optical-wedge Fourier transform spectrometer. The spectrum is thus evaluated numerically using a test spectrum source. The obtained numerical results show that the classical technique for numerical dispersion compensation, usually used with a Michelson interferometer, cannot be efficiently used with wedge interferometers as it is limited to the cases of weak dispersion. The error in this technique is thus evaluated in different cases and a new numerical technique is proposed to overcome this error. We also notice shrinkage in the interferogram spread in the spatial domain in contradiction with the normal dispersion effect in a Michelson interferometer.
© 2009 Optical Society of America
OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(260.2030) Physical optics : Dispersion
(300.6190) Spectroscopy : Spectrometers
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
ToC Category:
Spectroscopy
History
Original Manuscript: March 2, 2009
Revised Manuscript: May 25, 2009
Manuscript Accepted: June 1, 2009
Published: July 6, 2009
Citation
Tarek A. Al-Saeed and Diaa A. Khalil, "Dispersion compensation in moving-optical-wedge Fourier transform spectrometer," Appl. Opt. 48, 3979-3987 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-20-3979
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