Title

The role of self-focusing in laser-induced breakdown of water caused by nano- and picosecond pulses

Abstract

An experimental investigation of laser-induced breakdown of water and subthreshold phenomena using pulsed laser radiation in the nanosecond to picosecond region has been performed. It has been shown that self-focusing and suspended particles have a strong influence on laser-induced breakdown of water. A significant decrease in transmittance for an input irradiance 1 to 2 orders of magnitude less than the laser-induced breakdown threshold of water as observed, as well as a strong spot size dependence of this threshold. Besides the investigated processes result in a breakdown threshold of water for small spot sizes (∼2-4μm) that is nearly 10 times larger than that of glass due to a sharp increase in scattering from inhomogeneities formed as a result of self- focusing. For large spot sizes (∼20μm) the breakdown threshold of water is considerably less than for the same glasses (∼10-100 times) due to breakdown initiated by suspended particles. ©2004 Copyright SPIE - The International Society for Optical Engineering.

Publication Date

12-1-1997

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

2966

Number of Pages

490-495

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.274230

Socpus ID

58149316377 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/58149316377

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