Influence of laser beam characteristics and focusing optics on optical laser-induced breakdown detection

verfasst von

Clemens Walther, W. Hauser

Abstract

Laser-induced breakdown detection (LIBD) is a well established technique for measuring size and concentration of inorganic colloids in liquids. However, most applications of LIBD are restricted to the measurement of mean sizes, which is problematic in cases of wide colloid size distributions (PSD) as typically is the case in natural systems. Evaluation of PSDs from LIBD is possible but requires detailed control of the power density within the laser focus. In the present work we describe the mathematical treatment how to calculate this power density from the beam characteristics of the light source and the optical properties of the focusing optics. The results are compared to measured spatial distributions of breakdown events of three LIBD setups.

Externe Organisation(en)

Karlsruher Institut für Technologie (KIT)

Typ

Artikel

Journal

Applied Physics B: Lasers and Optics

Band

97

Seiten

877-886

Anzahl der Seiten

10

ISSN

0946-2171

Publikationsdatum

01.12.2009

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Physik und Astronomie (sonstige), Physik und Astronomie (insg.)

Elektronische Version(en)

https://doi.org/10.1007/s00340-009-3660-3 (Zugang: Unbekannt)