Time resolved evolution of structural, electrical, and thermal properties of copper irradiated by an intense ultrashort laser pulse

Sandhu, Arvinder S. ; Dharmadhikari, A. K. ; Kumar, G. Ravindra (2005) Time resolved evolution of structural, electrical, and thermal properties of copper irradiated by an intense ultrashort laser pulse Journal of Applied Physics, 97 (2). 023526_1-023526_5. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v97/i2/p02352...

Related URL: http://dx.doi.org/10.1063/1.1834726

Abstract

The dynamical properties of copper metal are obtained on a picosecond time scale using 100 fs laser pulse at 1015 Wcm-2-an intensity regime relevant to femtosecond micromachining. The dissipation mechanisms and scaling laws spanning a wide temperature range are obtained from femtosecond pump-probe reflectivity. We observe obliteration of the crystalline structure in copper within 400 fs due to lattice disorder caused by the intense laser pulse. The electrical resistivity is obtained by studying the probe reflectivity evolution from 0 to 30 ps. The "resistivity saturation" effect in an unexplored regime intermediate to hot plasma and cold solid is studied in detail. The temperature evolution and thermal conductivity values are also obtained.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Copper; Time Resolved Spectra; High-speed Optical Techniques; Electrical Resistivity; Thermal Conductivity; Reflectivity; Laser Beam Effects
ID Code:29734
Deposited On:23 Dec 2010 04:57
Last Modified:17 May 2016 12:32

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