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Proceedings Paper

Superheating phenomena in absorbing microdroplets irradiated by pulsed lasers
Author(s): Robert L. Armstrong
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Paper Abstract

The authors describe the results of recent droplet superheating experiments following excitation by pulsed lasers. Under low-irradiance excitation by either a short-pulse (0.4 microsecond(s) ec) or a long pulse (10 microsecond(s) ec) CO2 laser, two superheating thresholds may be identified, the deformation and disintegration thresholds. For higher-irradiance excitation by a Nd:YAG laser (pulse length approximately 10 nsec), the authors report observation of an evaporative instability in laser-irradiated microdroplets. The threshold behavior of these phenomena is discussed and a qualitative description of the effects is given.

Paper Details

Date Published: 1 September 1991
PDF: 9 pages
Proc. SPIE 1497, Nonlinear Optics and Materials, (1 September 1991); doi: 10.1117/12.46769
Show Author Affiliations
Robert L. Armstrong, New Mexico State Univ. (United States)

Published in SPIE Proceedings Vol. 1497:
Nonlinear Optics and Materials
Cyrus D. Cantrell; Charles M. Bowden, Editor(s)

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