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

Arvinder Singh Sandhu, A. K. Dharmadhikari, G. Ravindra Kumar

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The dynamical properties of copper metal are obtained on a picosecond time scale using 100 fs laser pulse at 1015 W cm-2 - an intensity regime relevant to femtosecond micromachining. The dissipation mechanisms aling 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.

Original languageEnglish (US)
Article number023526
JournalJournal of Applied Physics
Volume97
Issue number2
DOIs
StatePublished - Jan 15 2005
Externally publishedYes

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thermodynamic properties
electrical properties
reflectance
copper
electrical resistivity
probes
high temperature plasmas
micromachining
pulses
lasers
thermal conductivity
dissipation
disorders
pumps
saturation
conductivity
temperature
metals

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Time resolved evolution of structural, electrical, and thermal properties of copper irradiated by an intense ultrashort laser pulse. / Sandhu, Arvinder Singh; Dharmadhikari, A. K.; Kumar, G. Ravindra.

In: Journal of Applied Physics, Vol. 97, No. 2, 023526, 15.01.2005.

Research output: Contribution to journalArticle

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