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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 24 — Dec. 15, 2012
  • pp: 5232–5234

High-resolution mid-IR spectrometer based on frequency upconversion

Qi Hu, Jeppe Seidelin Dam, Christian Pedersen, and Peter Tidemand-Lichtenberg  »View Author Affiliations


Optics Letters, Vol. 37, Issue 24, pp. 5232-5234 (2012)
http://dx.doi.org/10.1364/OL.37.005232


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Abstract

We demonstrate a novel approach for high-resolution spectroscopy based on frequency upconversion and postfiltering by means of a scanning Fabry–Perot interferometer. The system is based on sum-frequency mixing, shifting the spectral content from the mid-infrared to the near-visible region allowing for direct detection with a silicon-based CCD camera. This approach allows for low noise detection even without cooling of the detector. A setup is realized for the 3 μm regime with a spectral resolution of 0.2 nm using lithium niobate as the nonlinear material and mixing with a single-frequency 1064 nm laser. We investigate water vapor emission lines from a butane burner and compare the measured results to model data. The presented method we suggest to be used for real-time monitoring of specific gas lines and reference signals.

© 2012 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(300.6340) Spectroscopy : Spectroscopy, infrared
(230.7405) Optical devices : Wavelength conversion devices

ToC Category:
Spectroscopy

History
Original Manuscript: September 18, 2012
Revised Manuscript: November 5, 2012
Manuscript Accepted: November 5, 2012
Published: December 13, 2012

Citation
Qi Hu, Jeppe Seidelin Dam, Christian Pedersen, and Peter Tidemand-Lichtenberg, "High-resolution mid-IR spectrometer based on frequency upconversion," Opt. Lett. 37, 5232-5234 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-24-5232


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References

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  10. L. Høgstedt, O. B. Jensen, J. S. Dam, C. Pedersen, and P. Tidemand-Lichtenberg, Laser Phys. 22, 1676 (2012). [CrossRef]

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