Open AccessDefining regimes and analytical expressions for fluence curves in pulsed laser heating of aerosolized nanoparticles
Author(s) -
Timothy A. Sipkens,
Kyle J. Daun
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.005684
Subject(s) - fluence , nanosecond , optics , aerosolization , materials science , laser , nanoparticle , nanotechnology , physics , medicine , inhalation , anatomy
Fluence curves are a powerful tool for understanding the mechanisms underlying nanosecond pulse laser heating of aerosolized nanoparticles, which is relevant to laser-induced incandescence (LII). This paper presents analytical expressions encompassing the entirety of the fluence domain considered in LII and uses them to formally define fluence regimes. The derived expressions and non-dimensional parameters facilitate one of the first comparisons of published experimental fluence curves. This procedure provides physical insight into the laser-nanoparticle interaction and highlights inconsistencies in the application of LII models to analyze the data.