Title :
Single-mode mid-infrared lasers for gas sensing in the 2–4um range
Author :
Gupta, J.A. ; Barrios, P.J. ; Bezinger, A. ; Waldron, P. ; Ventrudo, B.F. ; Lapointe, J. ; Poitras, D. ; Storey, C.
Author_Institution :
Inst. for Microstruct. Sci., Nat. Res. Council of Canada, Ottawa, ON, Canada
Abstract :
Type-I interband laser diodes were developed for trace gas sensing applications in the 2-4um wavelength range. The devices were grown by molecular beam epitaxy on GaSb substrates using InGaAsSb/Al(In)GaAsSb active regions. Tunable, single-mode lasers were produced using distributed feedback grating processing or by incorporating Fabry-Perot lasers in an external cavity configuration. Sensitive gas detection was demonstrated using these lasers in tunable-diode laser absorption spectroscopy.
Keywords :
III-V semiconductors; aluminium compounds; diffraction gratings; distributed feedback lasers; gallium arsenide; gas sensors; indium compounds; laser cavity resonators; laser tuning; molecular beam epitaxial growth; quantum well lasers; Fabry-Perot lasers; GaSb; GaSb substrates; InGaAsSb-AlInGaAsSb; distributed feedback grating; external cavity configuration; gas sensing; molecular beam epitaxy; single-mode midinfrared lasers; tunable-diode laser absorption spectroscopy; type-I interband laser diodes; wavelength 2 mum to 4 mum; Distributed feedback devices; Gas lasers; Gratings; Laser feedback; Laser modes; Laser tuning; Waveguide lasers;
Conference_Titel :
Information Photonics (IP), 2011 ICO International Conference on
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-61284-315-5
DOI :
10.1109/ICO-IP.2011.5953725
