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Title: Coherent control of the lattice dynamics of bismuth near the lindemann stability limit

Abstract

The relative contributions of the anharmonicity of the lattice potential and the nonequilibrium concentration of charge carriers to the time dependence of the coherent A{sub 1g} phonon frequency in bismuth excited by high-energy ultrashort laser pulses are studied by the coherent control method. The contributions are separated by the pump-probe method in which excitation is performed by two pulses with a controlled time delay. It is shown that, depending on the relative delay between the pump pulses, both correlation and anticorrelation between the amplitude and the initial frequency of oscillations are observed while the chirp and the initial frequency of the coherent phonon are anticorrelated. In addition, it has been found that the contributions of the lattice and the electronic subsystem are always anticorrelated. Therefore, a certain phase can be assigned to an electronic excitation and it may be suggested that the time dependence of the phonon frequency is determined not only by instantaneous values of the lattice and electronic response but also by the phase relations between them.

Authors:
 [1];  [2];  [3];  [4]
  1. Russian Academy of Sciences, Institute of Solid-State Physics (Russian Federation), E-mail: misochko@issp.ac.ru
  2. Renmin University of China (China)
  3. University of Tsukuba, Institute of Applied Physics (Japan)
  4. National Institute for Materials Science (Japan)
Publication Date:
OSTI Identifier:
21072531
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 104; Journal Issue: 2; Other Information: DOI: 10.1134/S1063776107020094; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; BISMUTH; CHARGE CARRIERS; CONTROL THEORY; EXCITATION; LASERS; OSCILLATIONS; PHONONS; POTENTIALS; PULSES; STABILITY; TIME DELAY; TIME DEPENDENCE

Citation Formats

Misochko, O. V., Lu, R., Hase, M., and Kitajima, M. Coherent control of the lattice dynamics of bismuth near the lindemann stability limit. United States: N. p., 2007. Web. doi:10.1134/S1063776107020094.
Misochko, O. V., Lu, R., Hase, M., & Kitajima, M. Coherent control of the lattice dynamics of bismuth near the lindemann stability limit. United States. doi:10.1134/S1063776107020094.
Misochko, O. V., Lu, R., Hase, M., and Kitajima, M. Sun . "Coherent control of the lattice dynamics of bismuth near the lindemann stability limit". United States. doi:10.1134/S1063776107020094.
@article{osti_21072531,
title = {Coherent control of the lattice dynamics of bismuth near the lindemann stability limit},
author = {Misochko, O. V. and Lu, R. and Hase, M. and Kitajima, M.},
abstractNote = {The relative contributions of the anharmonicity of the lattice potential and the nonequilibrium concentration of charge carriers to the time dependence of the coherent A{sub 1g} phonon frequency in bismuth excited by high-energy ultrashort laser pulses are studied by the coherent control method. The contributions are separated by the pump-probe method in which excitation is performed by two pulses with a controlled time delay. It is shown that, depending on the relative delay between the pump pulses, both correlation and anticorrelation between the amplitude and the initial frequency of oscillations are observed while the chirp and the initial frequency of the coherent phonon are anticorrelated. In addition, it has been found that the contributions of the lattice and the electronic subsystem are always anticorrelated. Therefore, a certain phase can be assigned to an electronic excitation and it may be suggested that the time dependence of the phonon frequency is determined not only by instantaneous values of the lattice and electronic response but also by the phase relations between them.},
doi = {10.1134/S1063776107020094},
journal = {Journal of Experimental and Theoretical Physics},
number = 2,
volume = 104,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}