title: A tunable single-mode 3.2 microm laser based on an InAsSb/InAsSbP double heterostructure with drive-current tuning range of 10 cm(-1).
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.
authors.affiliation: J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague. civis@jh-inst.cas.cz
authors.forename: S
authors.initials: S
authors.lastname: Civis
authors.forename: A N
authors.initials: AN
authors.lastname: Imenkov
authors.forename: A P
authors.initials: AP
authors.lastname: Danilova
authors.forename: N M
authors.initials: NM
authors.lastname: Kolchanova
authors.forename: V V
authors.initials: VV
authors.lastname: Sherstnev
authors.forename: Y U
authors.initials: YU
authors.lastname: Yakovlev
authors.forename: A D
authors.initials: AD
authors.lastname: Walters
mesh_terms: D005740:Gases / Q000032:analysis; D007834:Lasers; D012666:Semiconductors; D013057:Spectrum Analysis / Q000295:instrumentation* / Q000379:methods; D013696:Temperature
chemical_list: D005740:Gases