Applied Physics B

, Volume 78, Issue 2, pp 235–240 | Cite as

A diode-laser-based spectrometer for in-situ measurements of volcanic gases

  • A. Rocco
  • G. De Natale
  • P. De Natale
  • G. Gagliardi
  • L. Gianfrani
Article

Abstract

We report the first results of the field operation of a novel, portable diode-laser spectrometer for gas-concentration measurements in volcanic areas. Remote detection of direct absorption line shapes was possible thanks to a telecom single-mode optical fiber that delivered radiation from a room-temperature distributed-feedback diode laser, emitting at 1.997 μm, to an open-path multiple-reflection cell, placed on gas effluxes. The system was deployed on two different active volcanoes in Italy, where simultaneous and continuous monitoring of CO2 and H2O concentrations has been demonstrated.

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • A. Rocco
    • 1
  • G. De Natale
    • 2
  • P. De Natale
    • 1
  • G. Gagliardi
    • 3
  • L. Gianfrani
    • 3
  1. 1.Istituto Nazionale di Ottica ApplicataComprensorio OlivettiPozzuoli NaplesItaly
  2. 2.INGV-Osservatorio VesuvianoNaplesItaly
  3. 3.Dipartimento di Scienze AmbientaliSeconda Università di Napoli and INFM-Gruppo Coordinato Napoli 2CasertaItaly

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