Gas concentration measurements with DFB lasers to monitor volcanic activity

Year: 1998

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

Autors Affiliation: Istituto Nazionale di Ottica, Sezione di Napoli c/o Dip. Scienze Fisiche, Mostra d’Oltremare Pad. 19, 80125 Napoli Italy;
Dipartimento di Scienze Ambientali, II Universitá di Napoli, Via Arena, 22, 81100 Caserta and INFM, UdR Napoli, Mostra D ‘Oltremare, Pad. 20, 80125 Napoli;
Osservatorio Vesuviano, Via Manzoni 243, 80123 Napoli;
Istituto di Geocronologia e Geochimica Isotopica CNR Via Cardinale Maffi 36, 56127 Pisa

Abstract: We report construction and operation of a multiplexed laser spectrometer, based on fiber coupled Distributed Feed-Back (DFB) semiconductor diode lasers, for monitoring concentration of gases emitted from volcanoes. The main problems related to this particular application, as well as the way of operation of the apparatus are discussed. The first experimental data, recorded at the test site of Solfatara volcano, Naples, Italy are reported. To our knowledge, this is the first design of a small, low power consuming laser spectrometer for geochemical applications.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 3491      Pages from: 783  to: 787

KeyWords: Optical measurements; gas sensors; Remote sensing, surveillance
DOI: 10.1117/12.328627

Citations: 6
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