A tunable single-mode 3.2 microm laser based on an InAsSb/InAsSbP double heterostructure with drive-current tuning range of 10 cm(-1) |
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| Authors: | Civis S Imenkov A N Danilova A P Kolchanova N M Sherstnev V V Yakovlev Y U Walters A D |
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| Institution: | J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague. civis@jh-inst.cas.cz |
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| Abstract: | 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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