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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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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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, 107-110Projects:
- Russian Foundation for Basic Research (RFBR) [17-02-00648]
DOI: 10.1134/S0021364019140091
ISSN: 0021-3640
WoS: 000487897500004
Scopus: 2-s2.0-85073187743
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VinčaTY - 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 .