Optical Properties in Non-equilibrium Phase Transitions
Journal Article
·
· Physical Review Letters, vol. 96, no. 05, February 10, 2006, pp. 5001
OSTI ID:889982
An open question about the dynamical behavior of materials is how phase transition occurs in highly non-equilibrium systems. One important class of study is the excitation of a solid by an ultrafast, intense laser. The preferential heating of electrons by the laser field gives rise to initial states dominated by hot electrons in a cold lattice. Using a femtosecond laser pump-probe approach, we have followed the temporal evolution of the optical properties of such a system. The results show interesting correlation to non-thermal melting and lattice disordering processes. They also reveal a liquid-plasma transition when the lattice energy density reaches a critical value.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 889982
- Report Number(s):
- UCRL-JRNL-218075; TRN: US0604515
- Journal Information:
- Physical Review Letters, vol. 96, no. 05, February 10, 2006, pp. 5001, Journal Name: Physical Review Letters, vol. 96, no. 05, February 10, 2006, pp. 5001
- Country of Publication:
- United States
- Language:
- English
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