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Optics Letters

Optics Letters


  • Vol. 27, Iss. 20 — Oct. 15, 2002
  • pp: 1788–1790

Mid-infrared external-cavity quantum-cascade laser

G. Totschnig, F. Winter, V. Pustogov, J. Faist, and A. Müller  »View Author Affiliations

Optics Letters, Vol. 27, Issue 20, pp. 1788-1790 (2002)

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Single-frequency operation of a 10.4-μm room-temperature multimode quantum-cascade laser was achieved by use of a 17-mm short Littrow-type external-cavity configuration. The spectral intensity of the external-cavity laser was increased as much as 20-fold compared with that of a multimode quantum-cascade laser without an external cavity. A single-frequency tuning range of 76 nm (7 cm-1) was achieved. The results were obtained without antireflection coating of the laser output facet.

© 2002 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3600) Lasers and laser optics : Lasers, tunable
(140.4780) Lasers and laser optics : Optical resonators
(140.5960) Lasers and laser optics : Semiconductor lasers

G. Totschnig, F. Winter, V. Pustogov, J. Faist, and A. Müller, "Mid-infrared external-cavity quantum-cascade laser," Opt. Lett. 27, 1788-1790 (2002)

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