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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4946–4949

Narrow-linewidth quantum cascade laser at 8.6  μm

Eugenio Fasci, Nicola Coluccelli, Marco Cassinerio, Alessio Gambetta, Laurent Hilico, Livio Gianfrani, Paolo Laporta, Antonio Castrillo, and Gianluca Galzerano  »View Author Affiliations

Optics Letters, Vol. 39, Issue 16, pp. 4946-4949 (2014)

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We report on a narrow-linewidth distributed-feedback quantum cascade laser at 8.6 μm that is optical-feedback locked to a high-finesse V-shaped cavity. The spectral purity of the quantum cascade laser is fully characterized using a high-sensitivity optical frequency discriminator, leading to a 1 ms linewidth of less than 4 kHz and a minimum laser frequency noise spectral density as low as 0.01Hz2/Hz for Fourier frequencies larger than 100 kHz. The cumulative standard deviation of the laser intensity is better than 0.1% over an integration bandwidth from 2 Hz to 100 MHz.

© 2014 Optical Society of America

OCIS Codes
(140.3425) Lasers and laser optics : Laser stabilization
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 10, 2014
Revised Manuscript: July 22, 2014
Manuscript Accepted: July 22, 2014
Published: August 15, 2014

Eugenio Fasci, Nicola Coluccelli, Marco Cassinerio, Alessio Gambetta, Laurent Hilico, Livio Gianfrani, Paolo Laporta, Antonio Castrillo, and Gianluca Galzerano, "Narrow-linewidth quantum cascade laser at 8.6  μm," Opt. Lett. 39, 4946-4949 (2014)

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