Ab initio model of optical properties of two-temperature warm dense matter

B. Holst, V. Recoules, S. Mazevet, M. Torrent, A. Ng, Z. Chen, S. E. Kirkwood, V. Sametoglu, M. Reid, and Y. Y. Tsui
Phys. Rev. B 90, 035121 – Published 16 July 2014

Abstract

We present a model to describe thermophysical and optical properties of two-temperature systems consisted of heated electrons and cold ions in a solid lattice that occur during ultrafast heating experiments. Our model is based on ab initio simulations within the framework of density functional theory. The optical properties are obtained by evaluating the Kubo-Greenwood formula. By applying the material parameters of our ab initio model to a two-temperature model we are able to describe the temperature relaxation process of femtosecond-laser-heated gold and its optical properties within the same theoretical framework. Recent time-resolved measurements of optical properties of ultrafast heated gold revealed the dynamics of the interaction between femtosecond laser pulses and solid state matter. Different scenarios obtained from simulations of our study are compared with experimental data [Chen, Holst, Kirkwood, Sametoglu, Reid, Tsui, Recoules, and Ng, Phys. Rev. Lett. 110, 135001 (2013)].

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  • Received 9 February 2014
  • Revised 14 June 2014

DOI:https://doi.org/10.1103/PhysRevB.90.035121

©2014 American Physical Society

Authors & Affiliations

B. Holst1,2, V. Recoules1,3, S. Mazevet3, M. Torrent1, A. Ng4, Z. Chen5, S. E. Kirkwood6, V. Sametoglu5, M. Reid7, and Y. Y. Tsui5

  • 1CEA, DAM, DIF, 91297 Arpajon, France
  • 2LULI École Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau, France
  • 3Luth, Observatoire de Paris, 92195 Meudon, France
  • 4Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada
  • 5Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada
  • 6Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
  • 7Department of Physics, University of Northern British Columbia, Prince George, British Columbia, Canada

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Issue

Vol. 90, Iss. 3 — 15 July 2014

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