GaSb-based single-mode distributed feedback lasers for sensing – Presented by Dr. James Gupta, National Research Council of Canada

GaSb-based single-mode distributed feedback lasers for sensing – Presented by Dr. James Gupta, National Research Council of Canada at the 19th edition European Conference on Integrated Optics, which takes place on 3 – 5 April 2017 at Eindhoven University of Technology, Blauwe Zaal in Eindhoven, The Netherlands.

GaSb-based single-mode distributed feedback lasers for sensing.
Single-mode distributed feedback laser diodes were developed for detection of various trace gases in the 2-3.3um range using InGaAsSb/AlGaAsSb heterostructures on GaSb.  The first-order lateral index-coupled gratings were defined by electron-beam lithography according to an effective index model.  The fabricated lasers exhibit single-mode operation which is tunable through the absorption features of the various target gases by adjustment of the drive current.  In addition to the established open-path sensing applications, these devices have great potential for optoelectronic integrated gas sensors, making use of integrated photodetectors and possibly on-chip Si photonics waveguide structures.

About James Gupta
Senior Research Officer

About National Research Council of Canada
The National Research Council is the premier scientific research and development organization in Canada. It has laboratories and facilities across Canada, with activities in areas ranging from Astronomy and Aerospace to Semiconductors and Quantum Information.

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