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Monitoring of Gaseous Pollutants by Tunable Diode Lasers pp 67Cite as

High Frequency Modulation Spectroscopy with a Lead Salt Diode Laser

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Part of the book series: Air Pollution Research Reports ((APRR))

Abstract

Laser frequency modulation (FM) spectroscopy is a method of optical heterodyne spectroscopy capable of sensitive and rapid detection of absorption or dispersion features /1/. With this technique, quantum (shot noise) limited sensitivity can be readily achieved /2/, rendering FM spectroscopy a very useful tool e.g. for trace gas detection. A particularly attractive version of FM spectroscopy is high-frequency modulation spectroscopy with semiconductor lasers /3,4/: This scheme is implemented by modulating the injection current of the laser diode at radio frequencies, combining the simple and convenient tuning and modulation methods available for diode lasers with the high sensitivity and fast time response of optical heterodyne techniques. Recently, these features have been demonstrated /5/ with a GaAlAs laser diode emitting in the near infra-red.

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References

  1. G. C. Bjorklund, Opt. Lett. 5 (1980) 15

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  2. for a recent review see: M. Gehrtz, G. C. Bjorklund, and E. A. Whittaker, J. Opt. Soc. Am. B 2 (1985) 1510

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  3. W. Lenth, Opt. Lett. 8 (1983) 575

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  4. W. Lenth, IEEE J. Quantum Electron. QE-20 (1984) 1045

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  5. W. Lenth, and M. Gehrtz, Appl. Phys. Lett. 47 (1985) 1263

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  6. M. Gehrtz, W. Lenth, A. T. Young, and H. S. Johnston, Opt. Lett. 11 (1986) 132

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Author information

Author notes

  1. M. Gehrtz

    Present address: Plant Mainz Laboratories, IBM Germany, P.O. Box 2540, D-6500, Mainz, West-Germany

Authors and Affiliations

  1. IBM Almaden Research Center, 650 Harry Road, San Jose, CA, 95120-6099, USA

    M. Gehrtz & W. Lenth

  2. Lawrence Berkeley Laboratory, University of California, Berkeley, CA, 94720, USA

    A. T. Young & H. S. Johnston

Authors
  1. M. Gehrtz
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  2. W. Lenth
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  3. A. T. Young
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  4. H. S. Johnston
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Editor information

Editors and Affiliations

  1. Fraunhofer Institut für Physikalische Messtechnik, Freiburg, Germany

    R. Grisar , H. Preier  & G. Schmidtke ,  & 

  2. Joint Research Centre, Commission of the European Communities, Ispra, Italy

    G. Restelli

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© 1987 ECSC, EEC, EAEC, Brussels and Luxembourg

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Gehrtz, M., Lenth, W., Young, A.T., Johnston, H.S. (1987). High Frequency Modulation Spectroscopy with a Lead Salt Diode Laser. In: Grisar, R., Preier, H., Schmidtke, G., Restelli, G. (eds) Monitoring of Gaseous Pollutants by Tunable Diode Lasers. Air Pollution Research Reports. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3991-2_9

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  • DOI: https://doi.org/10.1007/978-94-009-3991-2_9

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-8271-6

  • Online ISBN: 978-94-009-3991-2

  • eBook Packages: Springer Book Archive

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