The availability of 1.25- to 2-/spl mu/m 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 /spl mu/m for fiber-optic communications. The same techniques can be used to make single-mode lasers operating from about 1.25 to 2.0 /spl mu/m. Employing these devices as sources for laser absorption spectroscopy, many molecules having absorption bands in this wavelength interval can be detected with /spl les/ ppm-meter sensitivity.


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    Title :

    InGaAs/InP distributed-feedback lasers for spectroscopic applications


    Contributors:

    Published in:

    Proceedings of LEOS'94 ; 1 ; 95-96 vol.1


    Publication date :

    1994-01-01


    Size :

    122073 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    InGaAsP/InP Distributed-Feedback Lasers for Spectroscopic Applications

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1994


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    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1997