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Optical transmission and reflection of aluminum film irradiated by nanosecond laser beam and experimental studying of phase-explosion

Optical transmission and reflection of aluminum film irradiated by nanosecond laser beam and... In this paper we present evidence for a phase explosion during the laser-induced ablation process by studying the optical reflectivity of the ablated plume. The ablation was produced by irradiating thin film aluminum coated on a quartz substrate with a single pulse laser beam in ambient air. The laser pulse was provided by the second harmonic of a Q-switched Nd:YAG laser with ∼10 ns pulse duration. The transmission of a low power He–Ne laser beam through the hot ablated material plume and its reflection (from the front surface, and rear surface of aluminum film) were also monitored during the duration of the ablation event. The results show that the front surface reflectivity is enhanced at an early time of ablation which is described as strong evidence for the creation of a phase explosion in this process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Physics A: Materials Science Processing Springer Journals

Optical transmission and reflection of aluminum film irradiated by nanosecond laser beam and experimental studying of phase-explosion

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References (38)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer-Verlag
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Optical and Electronic Materials; Operating Procedures, Materials Treatment; Nanotechnology; Surfaces and Interfaces, Thin Films
ISSN
0947-8396
eISSN
1432-0630
DOI
10.1007/s00339-011-6727-z
Publisher site
See Article on Publisher Site

Abstract

In this paper we present evidence for a phase explosion during the laser-induced ablation process by studying the optical reflectivity of the ablated plume. The ablation was produced by irradiating thin film aluminum coated on a quartz substrate with a single pulse laser beam in ambient air. The laser pulse was provided by the second harmonic of a Q-switched Nd:YAG laser with ∼10 ns pulse duration. The transmission of a low power He–Ne laser beam through the hot ablated material plume and its reflection (from the front surface, and rear surface of aluminum film) were also monitored during the duration of the ablation event. The results show that the front surface reflectivity is enhanced at an early time of ablation which is described as strong evidence for the creation of a phase explosion in this process.

Journal

Applied Physics A: Materials Science ProcessingSpringer Journals

Published: Dec 22, 2011

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