Summary form only given. In recent years, measurements of the trace greenhouse gases such as CO/sub 2/, CH/sub 4/ has become important. In chemical plants and gas pipe lines, continuous monitoring of the leak of inflammable gases is also very important. We proposed a new scheme for nonlinear Raman spectroscopy, in which a fixed-frequency laser is combined with a Raman shifter. In this scheme, no IR tunable laser is required like absorption spectroscopy and photo-acoustic spectroscopy (PAS). We applied this scheme to different kinds of nonlinear Raman spectroscopy; photo-acoustic Raman spectroscopy (PARS), coherent anti-Stokes Raman spectroscopy (CARS) and stimulated Raman gain spectroscopy (SRGS).


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    Title :

    Nonlinear Raman spectroscopies with Raman shifter for sensitive gas detection


    Contributors:
    Oki, Y. (author) / Takafuji, L. (author) / Maeda, M. (author)


    Publication date :

    1999-01-01


    Size :

    277035 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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