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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 25 — Dec. 6, 2010
  • pp: 26037–26045

Single-mode, narrow-linewidth external cavity quantum cascade laser through optical feedback from a partial-reflector

Richard A. Cendejas, Mark C. Phillips, Tanya L. Myers, and Matthew S. Taubman  »View Author Affiliations

Optics Express, Vol. 18, Issue 25, pp. 26037-26045 (2010)

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An external-cavity (EC) quantum cascade (QC) laser using optical feedback from a partial-reflector is reported. With this configuration, the otherwise multi-mode emission of a Fabry-Perot QC laser was made single-mode with optical output powers exceeding 40 mW. A mode-hop free tuning range of 2.46 cm−1 was achieved by synchronously tuning the EC length and QC laser current. The linewidth of the partial-reflector EC-QC laser was measured for integration times from 100 μs to 4 seconds, and compared to a distributed feedback QC laser. Linewidths as small as 480 kHz were recorded for the EC-QC laser.

© 2010 OSA

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 13, 2010
Revised Manuscript: November 14, 2010
Manuscript Accepted: November 15, 2010
Published: November 30, 2010

Richard A. Cendejas, Mark C. Phillips, Tanya L. Myers, and Matthew S. Taubman, "Single-mode, narrow-linewidth external cavity quantum cascade laser through optical feedback from a partial-reflector," Opt. Express 18, 26037-26045 (2010)

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