Thermal behavior of thin metal films irradiated by shaped femtosecond pulse sequences laser

A. M. Chen; Y. F. Jiang; L. Z. Sui; D. J. Ding; H. Liu; M. X. Jin

doi:10.1016/j.optcom.2010.12.089

Thermal behavior of thin metal films irradiated by shaped femtosecond pulse sequences laser

A. M. Chen, Y. F. Jiang, L. Z. Sui, D. J. Ding, H. Liu, M. X. Jin

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

23 Citations (Scopus)

Abstract

A numerical solution of the two-temperature model has been performed up to the shaped femtosecond pulse sequences heated metal target. The two-temperature model is used to analyze the shaped femtosecond pulse sequences with the following major conclusions. We confirm the distinctly different results on the different shaped femtosecond pulse sequences. As the number of shaped femtosecond pulses increases, the nonequilibrium state between electrons and phonons gradually disappears, the highest transient electron temperature is lowered and the thermolization time is prolonged, the electron heat conductivity remains higher because of the effect of incubation on the electron temperature, which preserves the advantages of ultrashort lasers. The shaped femtosecond pulse sequences can increase the efficiency in ablation and micromachining.

Original language	English
Pages (from-to)	2192-2197
Number of pages	6
Journal	Optics Communications
Volume	284
Issue number	8
DOIs	https://doi.org/10.1016/j.optcom.2010.12.089
Publication status	Published - 2011 Apr 15
Externally published	Yes

Keywords

Laser ablation
Shaped pulse laser
Two-temperature model

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.optcom.2010.12.089

Cite this

@article{4860bff0b94f4aaf821cf0d1e811e85f,

title = "Thermal behavior of thin metal films irradiated by shaped femtosecond pulse sequences laser",

abstract = "A numerical solution of the two-temperature model has been performed up to the shaped femtosecond pulse sequences heated metal target. The two-temperature model is used to analyze the shaped femtosecond pulse sequences with the following major conclusions. We confirm the distinctly different results on the different shaped femtosecond pulse sequences. As the number of shaped femtosecond pulses increases, the nonequilibrium state between electrons and phonons gradually disappears, the highest transient electron temperature is lowered and the thermolization time is prolonged, the electron heat conductivity remains higher because of the effect of incubation on the electron temperature, which preserves the advantages of ultrashort lasers. The shaped femtosecond pulse sequences can increase the efficiency in ablation and micromachining.",

keywords = "Laser ablation, Shaped pulse laser, Two-temperature model",

author = "Chen, {A. M.} and Jiang, {Y. F.} and Sui, {L. Z.} and Ding, {D. J.} and H. Liu and Jin, {M. X.}",

note = "Funding Information: Project supported by the Chinese National Fusion Projec t for ITER (Grant No. 2010GB104003 ), the National Natural Science Foundation of China (Grant Nos. 10974069 and 11034003 ).",

year = "2011",

month = apr,

day = "15",

doi = "10.1016/j.optcom.2010.12.089",

language = "English",

volume = "284",

pages = "2192--2197",

journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier",

number = "8",

}

TY - JOUR

T1 - Thermal behavior of thin metal films irradiated by shaped femtosecond pulse sequences laser

AU - Chen, A. M.

AU - Jiang, Y. F.

AU - Sui, L. Z.

AU - Ding, D. J.

AU - Liu, H.

AU - Jin, M. X.

N1 - Funding Information: Project supported by the Chinese National Fusion Projec t for ITER (Grant No. 2010GB104003 ), the National Natural Science Foundation of China (Grant Nos. 10974069 and 11034003 ).

PY - 2011/4/15

Y1 - 2011/4/15

N2 - A numerical solution of the two-temperature model has been performed up to the shaped femtosecond pulse sequences heated metal target. The two-temperature model is used to analyze the shaped femtosecond pulse sequences with the following major conclusions. We confirm the distinctly different results on the different shaped femtosecond pulse sequences. As the number of shaped femtosecond pulses increases, the nonequilibrium state between electrons and phonons gradually disappears, the highest transient electron temperature is lowered and the thermolization time is prolonged, the electron heat conductivity remains higher because of the effect of incubation on the electron temperature, which preserves the advantages of ultrashort lasers. The shaped femtosecond pulse sequences can increase the efficiency in ablation and micromachining.

AB - A numerical solution of the two-temperature model has been performed up to the shaped femtosecond pulse sequences heated metal target. The two-temperature model is used to analyze the shaped femtosecond pulse sequences with the following major conclusions. We confirm the distinctly different results on the different shaped femtosecond pulse sequences. As the number of shaped femtosecond pulses increases, the nonequilibrium state between electrons and phonons gradually disappears, the highest transient electron temperature is lowered and the thermolization time is prolonged, the electron heat conductivity remains higher because of the effect of incubation on the electron temperature, which preserves the advantages of ultrashort lasers. The shaped femtosecond pulse sequences can increase the efficiency in ablation and micromachining.

KW - Laser ablation

KW - Shaped pulse laser

KW - Two-temperature model

UR - http://www.scopus.com/inward/record.url?scp=79951856335&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79951856335&partnerID=8YFLogxK

U2 - 10.1016/j.optcom.2010.12.089

DO - 10.1016/j.optcom.2010.12.089

M3 - Article

AN - SCOPUS:79951856335

SN - 0030-4018

VL - 284

SP - 2192

EP - 2197

JO - Optics Communications

JF - Optics Communications

IS - 8

ER -

Thermal behavior of thin metal films irradiated by shaped femtosecond pulse sequences laser

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this