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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2019, Volume 109, Issue 6, Pages 387–391
DOI: https://doi.org/10.1134/S0370274X19060080 (Mi jetpl5853) 		 
This article is cited in 7 scientific papers (total in 7 papers)

OPTICS AND NUCLEAR PHYSICS

Plasmon-enhanced two-photon absorption of infrared femtosecond laser pulses in thin gold films

S. I. Kudryashovab, P. A. Danilova, S. G. Bezhanovab, A. A. Rudenkoa, A. A. Ionina, S. A. Uryupinab, S. F. Umanskayaa, N. A. Smirnova

a Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
b National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
Full-text PDF (987 kB) Citations (7)
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DOI: https://doi.org/10.1134/S0370274X19060080
Abstract: The transmission of femtosecond laser pulses of the near-infrared range (wavelength of 1030 nm) through nanocrystalline gold films with a variable thickness (15-90 nm) has been experimentally studied for various intensities of laser radiation in the range of 1-10 TW/cm$^2$. A dip in the transmission coefficient at the wave-length of pump pulses at moderate radiation intensities is due to two-photon transitions from $d$ bands with a high density of states to $s$ and $p$ bands with a low density of states and their saturation at higher intensities. The cross section is estimated for two-photon absorption in gold films enhanced by plasmon resonance of gold nanocrystallites at the wavelength of the second harmonic of exciting radiation, which is compared to values for gold films and various plasmon nanostructures known for other spectral ranges.
Funding agency Grant number
Russian Foundation for Basic Research 17-02-00648_а
Received: 26.12.2018
Revised: 25.01.2019
Accepted: 29.01.2019
English version:
Journal of Experimental and Theoretical Physics Letters, 2019, Volume 109, Issue 6, Pages 382–386
DOI: https://doi.org/10.1134/S0021364019060110
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: S. I. Kudryashov, P. A. Danilov, S. G. Bezhanov, A. A. Rudenko, A. A. Ionin, S. A. Uryupin, S. F. Umanskaya, N. A. Smirnov, “Plasmon-enhanced two-photon absorption of infrared femtosecond laser pulses in thin gold films”, Pis'ma v Zh. Èksper. Teoret. Fiz., 109:6 (2019), 387–391; JETP Letters, 109:6 (2019), 382–386
Citation in format AMSBIB
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