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

被引：39

作者：

Rocco, A

De Natale, G

De Natale, P

Gagliardi, G

Gianfrani, L

机构：

[1] Ist Nazl Ott Applicata, I-80078 Pozzuoli Naples, Italy

[2] Osserv Vesuviano, INGV, I-80124 Naples, Italy

[3] Univ Naples 2, Dipartimento Sci Ambientali, I-8100 Caserta, Italy

[4] INFM, Grp Coordinato Napoli 2, I-8100 Caserta, Italy

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2004年 / 78卷 / 02期

关键词：

D O I：

10.1007/s00340-003-1339-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 mum, 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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收藏

页码：235 / 240

页数：6

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