Spectral lines of gas sample are modulated by electric field in optoacoustic gas analyzer. Pressure fluctuations caused by local heating of absorbing gas are picked up by microphone. Since laser is operated in continuous-wave (CW) mode, background noise due to heating of windows is eliminated.


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    Titel :

    Improved "spectrophone"


    Beteiligte:
    Margolis, J. S. (Autor:in) / Shumate, M. S. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.10.1978



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Differential spectrophone

    Margolis, J. S. | NTRS | 1979


    Low-noise spectrophone

    Kavaya, M. J. / Margolis, J. S. | NTRS | 1979


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    Improved operating methods accompany improved locomotives

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    WorldSID: Improved biofidelity for improved vehicle safety

    Hautmann,E. / Scherer,R. / Akiyama,A. et al. | Kraftfahrwesen | 2005