Remote measurements of volcanic gases with diode-laser-based spectrometer
Authors: Gianfrani L., De Natale P.
Autors Affiliation: Istituto Nazionale di Ottica, Largo E. fermi 6, 50125
Abstract: The measurement of the volcanic gases with a diode-laser-based spectrometer was discussed. Optical fibers and distributed-feedback (DFB) semiconductor diode lasers as coherent sources were used. The sensitivity and accuracy for CO2 detection was improved by ~2 orders of magnitude. It was found that the spectrometer could operate for long periods when powered with batteries and solar panels.
Volume: 11(12) Pages from: 44 to: 44
KeyWords: Carbon dioxide; Coherent light; Composition; Distributed feedback lasers; Gas detectors; Heat flux; In situ processing; Optical fibers; Secondary batteries; Semiconductor lasers; Solar cells; Spectrometers; Volcanoes, Volcanic gases, Gas emissions