Melting of gold by ultrashort laser pulses: advanced two-temperature modeling and comparison with surface damage experiments

Sergey A. Lizunov; Alexander V. Bulgakov; Eleanor E.B. Campbell; Nadezhda M. Bulgakova

doi:10.1007/s00339-022-05733-4

Melting of gold by ultrashort laser pulses: advanced two-temperature modeling and comparison with surface damage experiments

Sergey A. Lizunov, Alexander V. Bulgakov, Eleanor E.B. Campbell, Nadezhda M. Bulgakova

Department of Physics

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The ultrafast-laser-induced solid–liquid phase transition in metals is still not clearly understood and its accurate quantitative description remains a challenge. Here, we systematically investigated, both experimentally and theoretically, the melting of gold by single femto- and picosecond near-infrared laser pulses. Two laser systems with wavelengths of 800 and 1030 nm and pulse durations ranging from 124 fs to 7 ps were used, and the damage and ablation thresholds were determined for each irradiation condition. The theoretical analysis was based on two-temperature modeling. Different expressions for the electron–lattice coupling rate and contribution of ballistic electrons were examined. In addition, the number of free electrons involved in the optical response is suggested to be dependent on the laser intensity and the influence of the fraction of involved electrons on the damage threshold was investigated. Only one combination of modelling parameters was able to describe consistently all the measured damage thresholds. Physical arguments are presented to explain the modeling results.

Original language	English
Article number	602
Journal	Applied Physics A: Materials Science and Processing
Volume	128
Issue number	7
DOIs	https://doi.org/10.1007/s00339-022-05733-4
State	Published - Jul 2022

Bibliographical note

Funding Information:
The authors thank Dr. J. Bonse for providing the bulk gold target. This work was supported by the European Regional Development Fund and the state budget of the Czech Republic (Project BIATRI: No. CZ.02.1.01/0.0/0.0/15_003/0000445). S. A. L. and A. V. B. also acknowledge financial support from the Russian Foundation for Basic Research (Project No. 19-38-90203).

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

Keywords

Ballistic electrons
Damage threshold
Electron–lattice coupling rate
Gold
Optical response
Two-temperature model
Ultrashort laser pulses

Access to Document

10.1007/s00339-022-05733-4

Cite this

@article{78408ac3a44a4459b62675c229ad55e8,

title = "Melting of gold by ultrashort laser pulses: advanced two-temperature modeling and comparison with surface damage experiments",

abstract = "The ultrafast-laser-induced solid–liquid phase transition in metals is still not clearly understood and its accurate quantitative description remains a challenge. Here, we systematically investigated, both experimentally and theoretically, the melting of gold by single femto- and picosecond near-infrared laser pulses. Two laser systems with wavelengths of 800 and 1030 nm and pulse durations ranging from 124 fs to 7 ps were used, and the damage and ablation thresholds were determined for each irradiation condition. The theoretical analysis was based on two-temperature modeling. Different expressions for the electron–lattice coupling rate and contribution of ballistic electrons were examined. In addition, the number of free electrons involved in the optical response is suggested to be dependent on the laser intensity and the influence of the fraction of involved electrons on the damage threshold was investigated. Only one combination of modelling parameters was able to describe consistently all the measured damage thresholds. Physical arguments are presented to explain the modeling results.",

keywords = "Ballistic electrons, Damage threshold, Electron–lattice coupling rate, Gold, Optical response, Two-temperature model, Ultrashort laser pulses",

author = "Lizunov, {Sergey A.} and Bulgakov, {Alexander V.} and Campbell, {Eleanor E.B.} and Bulgakova, {Nadezhda M.}",

note = "Funding Information: The authors thank Dr. J. Bonse for providing the bulk gold target. This work was supported by the European Regional Development Fund and the state budget of the Czech Republic (Project BIATRI: No. CZ.02.1.01/0.0/0.0/15_003/0000445). S. A. L. and A. V. B. also acknowledge financial support from the Russian Foundation for Basic Research (Project No. 19-38-90203). Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.",

year = "2022",

month = jul,

doi = "10.1007/s00339-022-05733-4",

language = "English",

volume = "128",

journal = "Applied Physics A: Materials Science and Processing",

issn = "0947-8396",

publisher = "Springer Heidelberg",

number = "7",

}

TY - JOUR

T1 - Melting of gold by ultrashort laser pulses

T2 - advanced two-temperature modeling and comparison with surface damage experiments

AU - Lizunov, Sergey A.

AU - Bulgakov, Alexander V.

AU - Campbell, Eleanor E.B.

AU - Bulgakova, Nadezhda M.

N1 - Funding Information: The authors thank Dr. J. Bonse for providing the bulk gold target. This work was supported by the European Regional Development Fund and the state budget of the Czech Republic (Project BIATRI: No. CZ.02.1.01/0.0/0.0/15_003/0000445). S. A. L. and A. V. B. also acknowledge financial support from the Russian Foundation for Basic Research (Project No. 19-38-90203). Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

PY - 2022/7

Y1 - 2022/7

N2 - The ultrafast-laser-induced solid–liquid phase transition in metals is still not clearly understood and its accurate quantitative description remains a challenge. Here, we systematically investigated, both experimentally and theoretically, the melting of gold by single femto- and picosecond near-infrared laser pulses. Two laser systems with wavelengths of 800 and 1030 nm and pulse durations ranging from 124 fs to 7 ps were used, and the damage and ablation thresholds were determined for each irradiation condition. The theoretical analysis was based on two-temperature modeling. Different expressions for the electron–lattice coupling rate and contribution of ballistic electrons were examined. In addition, the number of free electrons involved in the optical response is suggested to be dependent on the laser intensity and the influence of the fraction of involved electrons on the damage threshold was investigated. Only one combination of modelling parameters was able to describe consistently all the measured damage thresholds. Physical arguments are presented to explain the modeling results.

AB - The ultrafast-laser-induced solid–liquid phase transition in metals is still not clearly understood and its accurate quantitative description remains a challenge. Here, we systematically investigated, both experimentally and theoretically, the melting of gold by single femto- and picosecond near-infrared laser pulses. Two laser systems with wavelengths of 800 and 1030 nm and pulse durations ranging from 124 fs to 7 ps were used, and the damage and ablation thresholds were determined for each irradiation condition. The theoretical analysis was based on two-temperature modeling. Different expressions for the electron–lattice coupling rate and contribution of ballistic electrons were examined. In addition, the number of free electrons involved in the optical response is suggested to be dependent on the laser intensity and the influence of the fraction of involved electrons on the damage threshold was investigated. Only one combination of modelling parameters was able to describe consistently all the measured damage thresholds. Physical arguments are presented to explain the modeling results.

KW - Ballistic electrons

KW - Damage threshold

KW - Electron–lattice coupling rate

KW - Gold

KW - Optical response

KW - Two-temperature model

KW - Ultrashort laser pulses

UR - http://www.scopus.com/inward/record.url?scp=85132198038&partnerID=8YFLogxK

U2 - 10.1007/s00339-022-05733-4

DO - 10.1007/s00339-022-05733-4

M3 - Article

AN - SCOPUS:85132198038

SN - 0947-8396

VL - 128

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 7

M1 - 602

ER -

Melting of gold by ultrashort laser pulses: advanced two-temperature modeling and comparison with surface damage experiments

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Cite this