Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses

Davide Boschetto; Eugene G. Gamaly; Andrei V. Rode; Thomas Garl; Antoine Rousse

doi:10.1557/proc-1016-cc06-03

Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses

Davide Boschetto^*, Eugene G. Gamaly, Andrei V. Rode, Thomas Garl, Antoine Rousse

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › peer-review

Abstract

In this paper we present experimental and theoretical studies of reflectivity oscillations of an optical probe beam reflected from a single-crystal of bismuth excited by 35 fs laser pulses at deposited energy density above the melting temperature. Coherent and incoherent lattice dynamics as well as electrons dynamics were investigated starting from the reflectivity changes, measured with high accuracy ΔR/R < 10. The complex behaviour of the reflectivity could not be explained in the light of the existing theories. Therefore, we developed a new theory, starting from the very basic principles of lasermatter interaction, which shows good agreement with experimental results. We establish a direct dependence of the transient reflectivity on atomic motions driven by electron temperature gradient through electron-phonon coupling.

Original language	English
Title of host publication	Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology
Publisher	Materials Research Society
Pages	27-33
Number of pages	7
ISBN (Print)	9781605604213
DOIs	https://doi.org/10.1557/proc-1016-cc06-03
Publication status	Published - 2007
Event	Materials and Material Structures Enabling Terahertz Technology - 2007 MRS Spring Meeting - San Francisco, CA, United States Duration: 9 Apr 2007 → 13 Apr 2007

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1016
ISSN (Print)	0272-9172

Conference

Conference	Materials and Material Structures Enabling Terahertz Technology - 2007 MRS Spring Meeting
Country/Territory	United States
City	San Francisco, CA
Period	9/04/07 → 13/04/07

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10.1557/proc-1016-cc06-03

Cite this

Boschetto, D., Gamaly, E. G., Rode, A. V., Garl, T., & Rousse, A. (2007). Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses. In Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology (pp. 27-33). (Materials Research Society Symposium Proceedings; Vol. 1016). Materials Research Society. https://doi.org/10.1557/proc-1016-cc06-03

Boschetto, Davide ; Gamaly, Eugene G. ; Rode, Andrei V. et al. / Excitation of coherent phonons in crystalline bi : Theory for driving atomic vibrations by femtosecond pulses. Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology. Materials Research Society, 2007. pp. 27-33 (Materials Research Society Symposium Proceedings).

@inproceedings{0ebd211296964353bb80ab1eb67d56e2,

title = "Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses",

abstract = "In this paper we present experimental and theoretical studies of reflectivity oscillations of an optical probe beam reflected from a single-crystal of bismuth excited by 35 fs laser pulses at deposited energy density above the melting temperature. Coherent and incoherent lattice dynamics as well as electrons dynamics were investigated starting from the reflectivity changes, measured with high accuracy ΔR/R < 10. The complex behaviour of the reflectivity could not be explained in the light of the existing theories. Therefore, we developed a new theory, starting from the very basic principles of lasermatter interaction, which shows good agreement with experimental results. We establish a direct dependence of the transient reflectivity on atomic motions driven by electron temperature gradient through electron-phonon coupling.",

author = "Davide Boschetto and Gamaly, \{Eugene G.\} and Rode, \{Andrei V.\} and Thomas Garl and Antoine Rousse",

year = "2007",

doi = "10.1557/proc-1016-cc06-03",

language = "English",

isbn = "9781605604213",

series = "Materials Research Society Symposium Proceedings",

publisher = "Materials Research Society",

pages = "27--33",

booktitle = "Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology",

note = "Materials and Material Structures Enabling Terahertz Technology - 2007 MRS Spring Meeting ; Conference date: 09-04-2007 Through 13-04-2007",

}

Boschetto, D, Gamaly, EG, Rode, AV, Garl, T & Rousse, A 2007, Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses. in Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology. Materials Research Society Symposium Proceedings, vol. 1016, Materials Research Society, pp. 27-33, Materials and Material Structures Enabling Terahertz Technology - 2007 MRS Spring Meeting, San Francisco, CA, United States, 9/04/07. https://doi.org/10.1557/proc-1016-cc06-03

Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses. / Boschetto, Davide; Gamaly, Eugene G.; Rode, Andrei V. et al.
Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology. Materials Research Society, 2007. p. 27-33 (Materials Research Society Symposium Proceedings; Vol. 1016).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › peer-review

TY - GEN

T1 - Excitation of coherent phonons in crystalline bi

T2 - Materials and Material Structures Enabling Terahertz Technology - 2007 MRS Spring Meeting

AU - Boschetto, Davide

AU - Gamaly, Eugene G.

AU - Rode, Andrei V.

AU - Garl, Thomas

AU - Rousse, Antoine

PY - 2007

Y1 - 2007

N2 - In this paper we present experimental and theoretical studies of reflectivity oscillations of an optical probe beam reflected from a single-crystal of bismuth excited by 35 fs laser pulses at deposited energy density above the melting temperature. Coherent and incoherent lattice dynamics as well as electrons dynamics were investigated starting from the reflectivity changes, measured with high accuracy ΔR/R < 10. The complex behaviour of the reflectivity could not be explained in the light of the existing theories. Therefore, we developed a new theory, starting from the very basic principles of lasermatter interaction, which shows good agreement with experimental results. We establish a direct dependence of the transient reflectivity on atomic motions driven by electron temperature gradient through electron-phonon coupling.

AB - In this paper we present experimental and theoretical studies of reflectivity oscillations of an optical probe beam reflected from a single-crystal of bismuth excited by 35 fs laser pulses at deposited energy density above the melting temperature. Coherent and incoherent lattice dynamics as well as electrons dynamics were investigated starting from the reflectivity changes, measured with high accuracy ΔR/R < 10. The complex behaviour of the reflectivity could not be explained in the light of the existing theories. Therefore, we developed a new theory, starting from the very basic principles of lasermatter interaction, which shows good agreement with experimental results. We establish a direct dependence of the transient reflectivity on atomic motions driven by electron temperature gradient through electron-phonon coupling.

UR - https://www.scopus.com/pages/publications/70349914527

U2 - 10.1557/proc-1016-cc06-03

DO - 10.1557/proc-1016-cc06-03

M3 - Conference Paper

AN - SCOPUS:70349914527

SN - 9781605604213

T3 - Materials Research Society Symposium Proceedings

SP - 27

EP - 33

BT - Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology

PB - Materials Research Society

Y2 - 9 April 2007 through 13 April 2007

ER -

Boschetto D, Gamaly EG, Rode AV, Garl T, Rousse A. Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses. In Materials Research Society Symposium Proceedings - Materials and Material Structures Enabling Terahertz Technology. Materials Research Society. 2007. p. 27-33. (Materials Research Society Symposium Proceedings). doi: 10.1557/proc-1016-cc06-03

Excitation of coherent phonons in crystalline bi: Theory for driving atomic vibrations by femtosecond pulses

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