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Surpassing the path-limited resolution of Fourier-transform spectrometry with frequency combs

Piotr Maslowski, Kevin F. Lee, Alexandra C. Johansson, Amir Khodabakhsh, Grzegorz Kowzan, Lucile Rutkowski, Andrew A. Mills, Christian Mohr, Jie Jiang, Martin E. Fermann, and Aleksandra Foltynowicz
Phys. Rev. A 93, 021802(R) – Published 9 February 2016
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Abstract

We overcome the resolution limit of Fourier-transform spectrometry and measure instrumental line-shape-free broadband molecular spectra with lines narrower than the optical path-limited resolution. We do this by using an optical frequency comb and precisely matching the maximum delay range of the spectrometer to the comb line spacing to measure the intensities of the individual comb lines. This method allows measurements of undistorted high-resolution spectra with acquisition time and interferometer length reduced by orders of magnitude and with frequency scale accuracy given by the comb.

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  • Received 17 July 2015

DOI:https://doi.org/10.1103/PhysRevA.93.021802

©2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Piotr Maslowski1, Kevin F. Lee2, Alexandra C. Johansson3, Amir Khodabakhsh3, Grzegorz Kowzan1, Lucile Rutkowski3, Andrew A. Mills2, Christian Mohr2, Jie Jiang2, Martin E. Fermann2, and Aleksandra Foltynowicz3,*

  • 1Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, ul. Grudziądzka 5/7, 87–100 Toruń, Poland
  • 2IMRA America, Inc., 1044 Woodridge Avenue, Ann Arbor, Michigan 48105, USA
  • 3Department of Physics, Umeå University, 901 87 Umeå, Sweden

  • *aleksandra.foltynowicz@umu.se

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Issue

Vol. 93, Iss. 2 — February 2016

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