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Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses

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Authors
Kudryashov, Sergey I.
Smirnov, Nikita A.
Gaković, Biljana M.
Milovanović, Dubravka S.
Bezhanov, Stanislav G.
Uryupin, Sergey A.
Ionin, Andrey A.
Article (Published version)
,
© 2019, Pleiades Publishing, Inc.
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Abstract
The dependences of the depth of single-pulse ablation of the steel surface on the energy density of ultrashort laser pulses (0.3–12 ps) with a wavelength of 515 nm have the form different from the usual logarithmic one for linear absorption of radiation. Since the density of states of free conduction electrons in the s band is low, and the d band of strongly bound electrons with a high density of states is located around the Fermi level, these dependences have been approximated within the two-photon absorption model. The two-photon absorption coefficient increases almost linearly with the duration of laser pulses, which indicates the saturation of absorption and allows estimating the corresponding parameters of the electronic subsystem. © 2019, Pleiades Publishing, Inc.
Source:
JETP Letters, 2019, 110, 2, 107-110
Projects:
  • Russian Foundation for Basic Research (RFBR) [17-02-00648]

DOI: 10.1134/S0021364019140091

ISSN: 0021-3640

WoS: 000487897500004

Scopus: 2-s2.0-85073187743
[ Google Scholar ]
2
2
URI
http://vinar.vin.bg.ac.rs/handle/123456789/8535
Collections
  • Radovi istraživača
Institution
Vinča
TY  - JOUR
AU  - Kudryashov, Sergey I.
AU  - Smirnov, Nikita A.
AU  - Gaković, Biljana M.
AU  - Milovanović, Dubravka S.
AU  - Bezhanov, Stanislav G.
AU  - Uryupin, Sergey A.
AU  - Ionin, Andrey A.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8535
AB  - The dependences of the depth of single-pulse ablation of the steel surface on the energy density of ultrashort laser pulses (0.3–12 ps) with a wavelength of 515 nm have the form different from the usual logarithmic one for linear absorption of radiation. Since the density of states of free conduction electrons in the s band is low, and the d band of strongly bound electrons with a high density of states is located around the Fermi level, these dependences have been approximated within the two-photon absorption model. The two-photon absorption coefficient increases almost linearly with the duration of laser pulses, which indicates the saturation of absorption and allows estimating the corresponding parameters of the electronic subsystem. © 2019, Pleiades Publishing, Inc.
T2  - JETP Letters
T1  - Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses
VL  - 110
IS  - 2
SP  - 107
EP  - 110
DO  - 10.1134/S0021364019140091
ER  - 
@article{
author = "Kudryashov, Sergey I. and Smirnov, Nikita A. and Gaković, Biljana M. and Milovanović, Dubravka S. and Bezhanov, Stanislav G. and Uryupin, Sergey A. and Ionin, Andrey A.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8535",
abstract = "The dependences of the depth of single-pulse ablation of the steel surface on the energy density of ultrashort laser pulses (0.3–12 ps) with a wavelength of 515 nm have the form different from the usual logarithmic one for linear absorption of radiation. Since the density of states of free conduction electrons in the s band is low, and the d band of strongly bound electrons with a high density of states is located around the Fermi level, these dependences have been approximated within the two-photon absorption model. The two-photon absorption coefficient increases almost linearly with the duration of laser pulses, which indicates the saturation of absorption and allows estimating the corresponding parameters of the electronic subsystem. © 2019, Pleiades Publishing, Inc.",
journal = "JETP Letters",
title = "Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses",
volume = "110",
number = "2",
pages = "107-110",
doi = "10.1134/S0021364019140091"
}
Kudryashov SI, Smirnov NA, Gaković BM, Milovanović DS, Bezhanov SG, Uryupin SA, Ionin AA. Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses. JETP Letters. 2019;110(2):107-110
Kudryashov, S. I., Smirnov, N. A., Gaković, B. M., Milovanović, D. S., Bezhanov, S. G., Uryupin, S. A.,& Ionin, A. A. (2019). Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses.
JETP Letters, 110(2), 107-110.
https://doi.org/10.1134/S0021364019140091
Kudryashov Sergey I., Smirnov Nikita A., Gaković Biljana M., Milovanović Dubravka S., Bezhanov Stanislav G., Uryupin Sergey A., Ionin Andrey A., "Dependence of the Two-Photon Absorption Coefficient of Steel on the Pulse Duration During Its Ablation by Femto- and Picosecond Laser Pulses" 110, no. 2 (2019):107-110,
https://doi.org/10.1134/S0021364019140091 .

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