Femtosecond laser-induced electronic plasma at metal surface

Zhaoyang Chen; Samuel S. Mao

doi:10.1063/1.2966152

Femtosecond laser-induced electronic plasma at metal surface

Zhaoyang Chen, Samuel S. Mao

Mechanical & Nuclear Engineering

University of California, Berkeley

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

34 Scopus citations

Abstract

We develop a theoretical analysis to model plasma initiation at the early stage of femtosecond laser irradiation of metal surfaces. The calculation reveals that there is a threshold intensity for the formation of a microscale electronic plasma at the laser-irradidated metal surface. As the full width at half maximum of a laser pulse increases from 15 to 200 fs, the plasma formation threshold decreases by merely about 20%. The dependence of the threshold intensity on laser pulse width can be attributed to laser-induced surface electron emission, in particular due to the effect of photoelectric effect.

Original language	British English
Article number	051506
Journal	Applied Physics Letters
Volume	93
Issue number	5
DOIs	https://doi.org/10.1063/1.2966152
State	Published - 2008

Access to Document

10.1063/1.2966152

Cite this

@article{162bc1e67cfb4ca186c079b5a69a3abc,

title = "Femtosecond laser-induced electronic plasma at metal surface",

abstract = "We develop a theoretical analysis to model plasma initiation at the early stage of femtosecond laser irradiation of metal surfaces. The calculation reveals that there is a threshold intensity for the formation of a microscale electronic plasma at the laser-irradidated metal surface. As the full width at half maximum of a laser pulse increases from 15 to 200 fs, the plasma formation threshold decreases by merely about 20%. The dependence of the threshold intensity on laser pulse width can be attributed to laser-induced surface electron emission, in particular due to the effect of photoelectric effect.",

author = "Zhaoyang Chen and Mao, {Samuel S.}",

note = "Funding Information: This research has been supported by the U.S. Department of Defense MURI program.",

year = "2008",

doi = "10.1063/1.2966152",

language = "British English",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "5",

}

TY - JOUR

T1 - Femtosecond laser-induced electronic plasma at metal surface

AU - Chen, Zhaoyang

AU - Mao, Samuel S.

N1 - Funding Information: This research has been supported by the U.S. Department of Defense MURI program.

PY - 2008

Y1 - 2008

N2 - We develop a theoretical analysis to model plasma initiation at the early stage of femtosecond laser irradiation of metal surfaces. The calculation reveals that there is a threshold intensity for the formation of a microscale electronic plasma at the laser-irradidated metal surface. As the full width at half maximum of a laser pulse increases from 15 to 200 fs, the plasma formation threshold decreases by merely about 20%. The dependence of the threshold intensity on laser pulse width can be attributed to laser-induced surface electron emission, in particular due to the effect of photoelectric effect.

AB - We develop a theoretical analysis to model plasma initiation at the early stage of femtosecond laser irradiation of metal surfaces. The calculation reveals that there is a threshold intensity for the formation of a microscale electronic plasma at the laser-irradidated metal surface. As the full width at half maximum of a laser pulse increases from 15 to 200 fs, the plasma formation threshold decreases by merely about 20%. The dependence of the threshold intensity on laser pulse width can be attributed to laser-induced surface electron emission, in particular due to the effect of photoelectric effect.

UR - http://www.scopus.com/inward/record.url?scp=52049103580&partnerID=8YFLogxK

U2 - 10.1063/1.2966152

DO - 10.1063/1.2966152

M3 - Article

AN - SCOPUS:52049103580

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

M1 - 051506

ER -

Femtosecond laser-induced electronic plasma at metal surface

Abstract

Access to Document

Other files and links

Fingerprint

Cite this