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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 27, Iss. 9 — May. 1, 2002
  • pp: 766–768

Spectrometry with frequency combs

S. Schiller  »View Author Affiliations


Optics Letters, Vol. 27, Issue 9, pp. 766-768 (2002)
http://dx.doi.org/10.1364/OL.27.000766


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Abstract

A method is proposed for performing accurate spectral characterization of samples with frequency combs, e.g., from mode-locked lasers, over the spectral range covered by the combs. The essence of the method is the use of two combs of slightly different mode spacing to achieve spectral resolution. The advantages of the method are speed, frequency resolution, sensitivity, absence of dispersive components, and high spatial resolution.

© 2002 Optical Society of America

OCIS Codes
(140.4050) Lasers and laser optics : Mode-locked lasers
(300.6190) Spectroscopy : Spectrometers

Citation
S. Schiller, "Spectrometry with frequency combs," Opt. Lett. 27, 766-768 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-9-766


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References

  1. J. K. Ranka, R. S. Windeler, and A. J. Stentz, Opt. Lett. 25, 24 (2000).
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  9. If finer sampling is desired, one can record a set of interleaving spectra by shifting both frequency combs globally in frequency by appropriate amounts.
  10. R. K. Shelton, L.-S. Ma, H. C. Kapteyn, M. M. Murnane, J. L. Hall, and J. Ye, Science 293, 1286 (2001).
  11. T. M. Fortier, D. J. Jones, S. A. Diddams, J. L. Hall, J. Ye, S. T. Cundiff, and T. Windeler, Proc. SPIE 4271, 183 (2001).
  12. An opposite, sequential, mode of operation is also possible, where detection is done at a fixed beat frequency but the reference comb as a whole is scanned in frequency in steps of Dwax. Thereby a small frequency step Dwax of one comb as a whole is effectively amplified (e.g., by a factor of 106) to a large step wax1 in the sampled frequency. A phase measurement as suggested in the discussion of Fig. is suitable for this sequential technique.
  13. One could implement the stabilization of Dw0 by beating a cw laser with each comb, combining the beats to yield Dw0, and stabilizing one of the combs.

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