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Single mode laser based on InAsSb/InAsSbP double heterostructure with tuning from 3.224 to 3.234 μm

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7 Author(s)
Astakhova, A.P. ; A.F. Ioffe Physicotech. Inst., Acad. of Sci., St. Petersburg, Russia ; Imenkov, A.N. ; Kolchanova, N.M. ; Yakovlev, Y.P.
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A new type of semiconductor laser based on an InAsSb/InAsSbP double heterostructure and having just a single tuned spectral I line is described for spectroscopy of atmospherically important molecules in the 3100cm-1 region. The lasers are tested using a closed-cycle He-cryostat in the temperature range 12-100 K. The optimal characteristics of the lasers are found to be a temperature range of 17-80 K and a drive current range of 50-400 mA. Under these conditions, the laser emission can be tuned in a single-mode regime over a range greater than 10 cm-1. Experiments are performed to measure the rovibrational absorption spectra of CH3Cl, NH3, OCS and H2O, which prove the generation to be the single-mode one. The estimated spectral emission line-widths vary from 7 to 30 MHz depending on current and from laser to laser

Published in:

Optoelectronics, IEE Proceedings -  (Volume:149 ,  Issue: 1 )

Date of Publication:

Feb 2002

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