Scientific Results

Remote sensing of volcanic gases with a DFB-laser-based fiber spectrometer

Year: 2000

Authors: Gianfrani L., De Natale P., De Natale G.

Autors Affiliation: Istituto Nazionale di Fisica della Materia (INFM), Unità di Napoli and Dipartimento di Scienze Ambientali della Seconda Università di Napoli, Via Vivaldi, 81100 Caserta, Italy;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Osservatorio Vesuviano, 243 Via Manzoni, 80123 Napoli, Italy

Abstract: We demonstrate monitoring of H2O and CO2 emitted in a volcanic area, using a spectrometer equipped with two distributed feedback (DFB) semiconductor diode lasers. Each laser is resonant with a molecular species and is fiber-coupled to allow remote operation of the spectrometer. Recordings of H2O and CO2 lines made at the Solfatara volcano, in southern Italy, are shown, and the application of such a spectrometer as a new tool for the continuous monitoring and surveillance of volcanoes is discussed.

Journal/Review: APPLIED PHYSICS B-LASERS AND OPTICS

Volume: 70 (3)      Pages from: 467  to: 470

KeyWords: Optical-absorption spectroscopy; Sulfur-dioxide; LIDAR
DOI: 10.1007/s003400000236

Citations: 37
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