A tunable single-mode 3.2 microm laser based on an InAsSb/InAsSbP double heterostructure with drive-current tuning range of 10 cm(-1)

A new type of semi-conductor laser with composition InAsSb/InAsSbP is described. This laser was produced for the absorption spectroscopy of atmospherically important molecules in the 3100 cm(-1) region and tested using a closed-cycle He-cryostat in the temperature range 30-80 K. The optimal characte...

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Bibliographic Details
Published inSpectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 56A; no. 11; pp. 2125 - 2130
Main Authors Civis, S, Imenkov, A N, Danilova, A P, Kolchanova, N M, Sherstnev, V V, Yakovlev, Y U, Walters, A D
Format Journal Article
LanguageEnglish
Published England 01.10.2000
Subjects
Gases - analysis
Lasers
Semiconductors
Spectrum Analysis - instrumentation
Spectrum Analysis - methods
Temperature
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Summary:A new type of semi-conductor laser with composition InAsSb/InAsSbP is described. This laser was produced for the absorption spectroscopy of atmospherically important molecules in the 3100 cm(-1) region and tested using a closed-cycle He-cryostat in the temperature range 30-80 K. The optimal characteristics of the laser were found to be a heatsink temperature of 62 K and a drive current range of 50-350 mA. Under these conditions, the laser emits single-mode radiation in an exceptionally large wavenumber range of > 10 cm(-1). To test the laser, several experiments were carried out in which the rovibrational absorption spectra of CH3Cl, NH3, OCS and H2O were measured.
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ISSN:1386-1425