Title :
Phonon dynamics in photoexcited bismuth
Author :
Fritz, D.M. ; Wahlstrand, J. ; Reis, D.A. ; Murray, E.D. ; Fahy, S.
Author_Institution :
Dept. of Phys., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The A1g phonon dynamics in photoexcited bismuth is presented. Simulations, using constrained DFT, and experiments, using double-pump-probe excitation of coherent phonons, separate the roles of lattice anharmonicity and plasma dynamics in the time-dependent vibrational period.
Keywords :
bismuth; discrete Fourier transforms; high-speed optical techniques; laser beams; optical pumping; phonons; DFT; bismuth photoexcitation; double-pump-probe excitation; laser pulse; lattice anharmonicity; phonon coherence; phonon dynamics; plasma dynamics; time-dependent vibrational period; ultrafast double pump probe; Atom optics; Bismuth; Lattices; Nonlinear optics; Optical pulses; Optical pumping; Optical scattering; Phonons; Reflectivity; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1549328
