title: Normalization of laser-induced breakdown spectroscopy spectra using a plastic optical fiber light collector and acoustic sensor device.
abstract: To estimate the acoustic plasma energy in laser-induced breakdown spectroscopy (LIBS) experiments, a light collecting and acoustic sensing device based on a coil of plastic optical fiber (POF) is proposed. The speckle perturbation induced by the plasma acoustic energy was monitored using a CCD camera placed at the end of a coil of multimode POF and processed with an intraimage contrast ratio method. The results were successfully verified with the acoustic energy measured by a reference microphone. The proposed device is useful for normalizing LIBS spectra, enabling a better estimation of the sample's chemical composition.
authors.affiliation: Photonics Engineering Group, University of Cantabria, Santander 39005, Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: Anabitarte
authors.forename: Luis
authors.initials: L
authors.lastname: Rodríguez-Cobo
authors.forename: José-Miguel
authors.initials: JM
authors.lastname: López-Higuera
authors.forename: Adolfo
authors.initials: A
authors.lastname: Cobo