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Pis'ma v Zh. Èksper. Teoret. Fiz., 2019, Volume 110, Issue 4, Pages 230–234 (Mi jetpl5975)  

OPTICS AND NUCLEAR PHYSICS

Ultrafast broadband diagnostics of the filling of the $s$ band at the two-photon femtosecond laser excitation of a gold film

S. I. Kudryashovab, A. A. Samokhvalova, S. N. Shelyginaa, N. I. Busleevb, A. K. Ivanovab, N. A. Smirnovb, S. G. Bezhanovb, S. A. Uryupinb, A. A. Ioninb, V. P. Veikoa

a ITMO University, St. Petersburg, Russia
b Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia

Abstract: The transmission of near infrared femtosecond laser pulses (wavelength of 800 nm) and supercontinuum radiation (300–750 nm) generated by them through a 50-nm gold film immersed in water has been experimentally studied at the power of focused laser radiation in the range of 1–10 GW. An increase in the excitation intensity is accompanied by the blueshift of the edge of the extinction band of the film, which is attributed to the filling of electronic states of the $s$ band with a low density of states caused by two-photon interband transitions from $d$ bands with a high density of states.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation 074-U01
Russian Foundation for Basic Research 17-02-00648_
This work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. 074-U01 for the ITMO University) and by the Russian Foundation for Basic Research (project no. 17-02-00648).


DOI: https://doi.org/10.1134/S0370274X19160033

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English version:
Journal of Experimental and Theoretical Physics Letters, 2019, 110:4, 250–253

Bibliographic databases:

Received: 27.06.2019
Revised: 27.06.2019
Accepted:10.07.2019

Citation: S. I. Kudryashov, A. A. Samokhvalov, S. N. Shelygina, N. I. Busleev, A. K. Ivanova, N. A. Smirnov, S. G. Bezhanov, S. A. Uryupin, A. A. Ionin, V. P. Veiko, “Ultrafast broadband diagnostics of the filling of the $s$ band at the two-photon femtosecond laser excitation of a gold film”, Pis'ma v Zh. Èksper. Teoret. Fiz., 110:4 (2019), 230–234; JETP Letters, 110:4 (2019), 250–253

Citation in format AMSBIB
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\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
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\jour JETP Letters
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