Abstract

Novel GaInSbAs/GaSb multiple-quantum-well lasers operating near room temperature have been successfully used for tunable diode laser absorption spectroscopy in the vicinity of 2.35 μm. Continuous current tuning over a more than 150-GHz frequency range has been realized. Direct absorption measurements have been carried out on the R9, R10, R11, and R12 lines of carbon monoxide. Traces of carbon monoxide at the level of 0.3 part in 10⁶ in volume at 100 Torr could be detected by the low-frequency wavelength-modulation technique and an astigmatic multipass cell. These results show a potential use of these diode lasers in portable low-cost trace-pollutant sensors.

© 1998 Optical Society of America

Single-frequency Sb-based distributed-feedback lasers emitting at 2.3 μm above room temperature for application in tunable diode laser absorption spectroscopy

Abdelmagid Salhi, David Barat, Daniele Romanini, Yves Rouillard, Aimeric Ouvrard, Ralph Werner, Jochen Seufert, Johannes Koeth, Aurore Vicet, and Arnaud Garnache
Appl. Opt. 45(20) 4957-4965 (2006)

Long-Path Monitoring of Atmospheric Carbon Monoxide with a Tunable Diode Laser System

R. T. Ku, E. D. Hinkley, and J. O. Sample
Appl. Opt. 14(4) 854-861 (1975)

Methodology for detection of carbon monoxide in hot, humid media by telecommunication distributed feedback laser-based tunable diode laser absorption spectrometry

Lemthong Lathdavong, Jie Shao, Pawel Kluczynski, Stefan Lundqvist, and Ove Axner
Appl. Opt. 50(17) 2531-2550 (2011)

Tunable carbon monoxide overtone laser sideband system for precision spectroscopy from 2.6 to 4.1 µm

M. Mürtz, B. Frech, P. Palm, R. Lotze, and W. Urban
Opt. Lett. 23(1) 58-60 (1998)

Frequency modulation multiplexing for simultaneous detection of multiple gases by use of wavelength modulation spectroscopy with diode lasers

Daniel B. Oh, Mark E. Paige, and David S. Bomse
Appl. Opt. 37(12) 2499-2501 (1998)