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 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.
Civis
S
S
J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague. civis@jh-inst.cas.cz
Imenkov
A N
AN
Danilova
A P
AP
Kolchanova
N M
NM
Sherstnev
V V
VV
Yakovlev
Y U
YU
Walters
A D
AD
D005740:Gases / Q000032:analysis; D007834:Lasers; D012666:Semiconductors; D013057:Spectrum Analysis / Q000295:instrumentation* / Q000379:methods; D013696:Temperature
D005740:Gases