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Kvantovaya Elektronika, 2014, Volume 44, Number 12, Pages 1099–1103 (Mi qe16078)  

This article is cited in 14 scientific papers (total in 14 papers)

Interaction of laser radiation with matter. Laser plasma

Propagation and absorption of high-intensity femtosecond laser radiation in diamond

V. V. Kononenkoab, V. I. Konovab, V. M. Gololobovb, E. V. Zavedeevab

a A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow
b National Engineering Physics Institute "MEPhI", Moscow
References:
Abstract: Femtosecond interferometry has been used to experimentally study the photoexcitation of the electron subsystem of diamond exposed to femtosecond laser pulses of intensity 1011 to 1014 W cm-2. The carrier concentration has been determined as a function of incident intensity for three harmonics of a Ti : sapphire laser (800, 400 and 266 nm). The results demonstrate that, in a wide range of laser fluences (up to those resulting in surface and bulk graphitisation), a well-defined multiphoton absorption prevails. We have estimated nonlinear absorption coefficients for pulsed radiation at λ = 800 nm (four-photon transition) and at 400 and 266 nm (indirect and direct two-photon transitions, respectively). It has also been shown that, at any considerable path length of a femtosecond pulse in diamond (tens of microns or longer), the laser beam experiences a severe nonlinear transformation, determining the amount of energy absorbed by the lattice, which is important for the development of technology for diamond photostructuring by ultrashort pulses. The competition between wave packet self-focusing and the plasma defocusing effect is examined as a major mechanism governing the propagation of intense laser pulses in diamond.
Keywords: femtosecond laser radiation, diamond, multiphoton absorption, nonlinear propagation, femtosecond interferometry.
Received: 03.03.2014
Revised: 23.10.2014
English version:
Quantum Electronics, 2014, Volume 44, Issue 12, Pages 1099–1103
DOI: https://doi.org/10.1070/QE2014v044n12ABEH015459
Bibliographic databases:
Document Type: Article
PACS: 81.05.Uw, 33.80.Rm, 42.65.Re
Language: Russian


Citation: V. V. Kononenko, V. I. Konov, V. M. Gololobov, E. V. Zavedeev, “Propagation and absorption of high-intensity femtosecond laser radiation in diamond”, Kvantovaya Elektronika, 44:12 (2014), 1099–1103 [Quantum Electron., 44:12 (2014), 1099–1103]
Linking options:
  • https://www.mathnet.ru/eng/qe16078
  • https://www.mathnet.ru/eng/qe/v44/i12/p1099
  • This publication is cited in the following 14 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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