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Optics Letters

Optics Letters


  • Vol. 36, Iss. 20 — Oct. 15, 2011
  • pp: 3969–3971

Phase-locking of a 2.5 THz quantum cascade laser to a frequency comb using a GaAs photomixer

M. Ravaro, C. Manquest, C. Sirtori, S. Barbieri, G. Santarelli, K. Blary, J.-F. Lampin, S. P. Khanna, and E. H. Linfield  »View Author Affiliations

Optics Letters, Vol. 36, Issue 20, pp. 3969-3971 (2011)

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We report the heterodyne detection and phase locking of a 2.5 THz quantum cascade laser (QCL) using a terahertz frequency comb generated in a GaAs photomixer using a femtosecond fiber laser. With 10 mW emitted by the QCL, the phase-locked signal at the intermediate frequency yields 80 dB of signal-to-noise ratio in a bandwidth of 1 Hz .

© 2011 Optical Society of America

OCIS Codes
(040.2840) Detectors : Heterodyne
(300.6310) Spectroscopy : Spectroscopy, heterodyne
(140.3425) Lasers and laser optics : Laser stabilization
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:

Original Manuscript: August 11, 2011
Manuscript Accepted: August 29, 2011
Published: October 5, 2011

M. Ravaro, C. Manquest, C. Sirtori, S. Barbieri, G. Santarelli, K. Blary, J.-F. Lampin, S. P. Khanna, and E. H. Linfield, "Phase-locking of a 2.5 THz quantum cascade laser to a frequency comb using a GaAs photomixer," Opt. Lett. 36, 3969-3971 (2011)

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