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Resonance absorption enhancement in laser-generated plasma ablating Cu treated surfaces

Published online by Cambridge University Press:  27 November 2012

L. Torrisi ,
M. Cutroneo ,
F. Caridi  and
C. Gentile
L. Torrisi*
Affiliation:
Dipartimento di Fisica, Università di Messina, S. Agata, Italy
M. Cutroneo
Affiliation:
Dipartimento di Fisica, Università di Messina, S. Agata, Italy Centro Siciliano di Fisica Nucleare e Str. d. Materia, Catania, Italy
F. Caridi
Affiliation:
Dipartimento di Fisica, Università di Messina, S. Agata, Italy
C. Gentile
Affiliation:
Dipartimento di Fisica, Università di Messina, S. Agata, Italy
*
Address correspondence and reprint requests to: Lorenzo Torrisi, Dipartimento di Fisica, Università di Messina, V.le F. Stagno D'Alcontres 31, 98166 S. Agata (ME), Italy. E-mail: lorenzo.torrisi@unime.it
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Abstract

Resonant absorption effects for 1.064 µm infrared laser pulse radiations are investigated by using different techniques producing micrometric surface structures with dimensions comparable to the wavelength value. The laser absorption is controlled through measurement of the Cu ion acceleration using time-of-flight approach. Surface treatments include low energy laser etching in air, deposition of microspheres obtained ablating Cu targets in water, pulse laser deposition of microstructures precursor of thin homogeneous film, chemical etching with HNO3 acid, Ar+ ion sputtering and rolling burnishing surface of thin Cu foils. Results indicate that the best resonance effect is obtained with the rolling burnishing, ion sputtering and microsphere deposition processes which enhance the Cu ion energy and the yield emission.

Keywords

Laser-generated plasmaResonant absorptionSurface treatmentsTime-of-flight
Type
Research Article
Information
Laser and Particle Beams , Volume 31 , Issue 1 , March 2013 , pp. 37 - 44
Copyright
Copyright © Cambridge University Press 2012

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