Abstract:
An O-shaped structure at wavelengths of 930–960 nm in the frequency–angular spectrum of the supercontinuum generated during the filamentation of a femtosecond laser pulse with a central wavelength of 740 nm on a 75-m path in air has been observed experimentally. This feature of the frequency–angular spectrum is due to the presence of the absorption band of water vapor in the range of 930–960 nm and the anomalous dispersion region associated with this absorption. This result opens prospects for the remote single-pulse detection of impurities in air.
This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained. N.A. Zhidovtsev acknowledges the support of the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS.
Citation:
D. V. Pushkarev, L. V. Seleznev, G. E. Rizaev, D. S. Uryupina, N. A. Zhidovtsev, O. G. Kosareva, A. B. Savel'ev, “Formation of an O-shaped structure in the red wing of the frequency–angular spectrum during filamentation on a long atmospheric path”, Pis'ma v Zh. Èksper. Teoret. Fiz., 119:8 (2024), 593–597; JETP Letters, 119:8 (2024), 599–603
\Bibitem{PusSelRiz24}
\by D.~V.~Pushkarev, L.~V.~Seleznev, G.~E.~Rizaev, D.~S.~Uryupina, N.~A.~Zhidovtsev, O.~G.~Kosareva, A.~B.~Savel'ev
\paper Formation of an O-shaped structure in the red wing of the frequency--angular spectrum during filamentation on a long atmospheric path
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2024
\vol 119
\issue 8
\pages 593--597
\mathnet{http://mi.mathnet.ru/jetpl7204}
\crossref{https://doi.org/10.31857/S1234567824080044}
\edn{https://elibrary.ru/KMBAQC}
\transl
\jour JETP Letters
\yr 2024
\vol 119
\issue 8
\pages 599--603
\crossref{https://doi.org/10.1134/S0021364024600770}
Linking options:
https://www.mathnet.ru/eng/jetpl7204
https://www.mathnet.ru/eng/jetpl/v119/i8/p593
This publication is cited in the following 1 articles:
Dmitrii V. Pushkarev, Andrey D. Bulygin, Nikita A. Zhidovtsev, Daria S. Uryupina, Roman V. Volkov, Yury E. Geints, Andrei B. Savel'ev, Opt. Lett., 50:1 (2025), 13