Title :
InGaAs/InP distributed-feedback lasers for spectroscopic applications
Author :
Martinelli, Ramon U. ; Menna, Raymond J. ; Cooper, David E.
Author_Institution :
David Sarnoff Res. Center, Princeton, NJ, USA
fDate :
31 Oct-3 Nov 1994
Abstract :
The availability of 1.25- to 2-μm InGaAsP/InP distributed-feedback lasers opens the way to sensitive, room-temperature trace-gas monitoring with applications in medical diagnostics, pollution monitoring, security, and factory-process control. InGaAsP/lnP distributed-feedback (DFB) lasers have been highly developed at 1.3 and 1.55 μm for fiber-optic communications. The same techniques can be used to make single-mode lasers operating from about 1.25 to 2.0 μm. Employing these devices as sources for laser absorption spectroscopy, many molecules having absorption bands in this wavelength interval can be detected with ⩽ ppm-meter sensitivity
Keywords :
spectroscopic light sources; 1.25 to 2.0 micron; InGaAs/InP distributed-feedback lasers; InGaAsP-InP; laser absorption spectroscopy; molecules; single-mode lasers; trace-gas monitoring; Absorption; Biomedical monitoring; Fiber lasers; Indium gallium arsenide; Indium phosphide; Medical diagnosis; Optical control; Pollution; Security; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-1470-0
DOI :
10.1109/LEOS.1994.586909
