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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 25, Iss. 10 — May. 15, 2000
  • pp: 725–727

3.3-µm microcavity light emitter for gas detection

E. Hadji, E. Picard, C. Roux, E. Molva, and P. Ferret  »View Author Affiliations


Optics Letters, Vol. 25, Issue 10, pp. 725-727 (2000)
http://dx.doi.org/10.1364/OL.25.000725


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Abstract

A room-temperature resonant-cavity light source emitting at 3.327 µm is presented. It combines a CdHgTe light-emitting layer, grown by molecular beam epitaxy, and two evaporated YF3–ZnS Bragg mirrors. The emitter is optically pumped by a commercial low-power GaAs laser diode. Compared with an unprocessed sample, this microcavity device shows a drastic (10-fold) linewidth reduction, a 3.3-fold intensity increase at 3.327 µm , and a 2.4-fold angular-spread decrease. The emitted optical power is 15 µW , and the device is used as a light source in a basic gas-detection setup. Measurements of a butane–propane mixture in the 1 to 5× 10-3 bar range with a 5-cm-long single-path gas cell are demonstrated.

© 2000 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.6080) Optical devices : Sources
(250.5230) Optoelectronics : Photoluminescence
(260.3060) Physical optics : Infrared
(280.1120) Remote sensing and sensors : Air pollution monitoring
(300.6340) Spectroscopy : Spectroscopy, infrared

Citation
E. Hadji, E. Picard, C. Roux, E. Molva, and P. Ferret, "3.3-µm microcavity light emitter for gas detection," Opt. Lett. 25, 725-727 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-10-725

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