Quantum cascade (QC) lasers are fundamentally new semiconductor lasers based on intersubband transitions and on electrons emitting one photon per stage as they cascade through a periodic quantum well structure. As such their wavelength can be tailored over a wide range and their differential efficiency is inherently greater than unity leading to high power operation. Recent results will be presented demonstrating high power room temperature pulsed operation from 5 to 11.6 /spl mu/m, with peak powers ranging from 200 to 50 mW.


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    Title :

    Recent advances in quantum cascade lasers


    Contributors:
    Capasso, F. (author) / Faist, J. (author) / Gmachl, C. (author) / Scamarcio, G. (author) / Sivco, D.L. (author) / Baillargeon, J.N. (author) / Cho, A.Y. (author)


    Publication date :

    1997-01-01


    Size :

    86061 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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