Laser short-pulse heating: a theoretical analysis of electron excess energy dissipation in the early heating period


Yilbas B., Boran K.

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, cilt.220, sa.1, ss.95-102, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 220 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1243/095440605x72576
  • Dergi Adı: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
  • Sayfa Sayıları: ss.95-102

Özet

Laser short-pulse heating of a gold surface is considered. In order to examine the influence of electron-phonon collision on electron and lattice temperature rise, two cases are accommodated in the analysis. In case 1, excess energy dissipation through electron-phonon collision is omitted during the initiation of the laser pulse and the electron-phonon collision time, and in case 2, electron excess energy dissipation from the initiation of the laser pulse is accommodated in the analysis. It is found that electron temperature rise is higher while lattice site temperature is lower for case 1 than that corresponding to case 2. However, the electron temperature difference due to case 1 and case 2 is small, particularly during late heating periods.