Tracing Evolution of Angle-Wavelength Spectrum along the 40-m Postfilament in Corridor Air
| Autor: | Daniil E. Shipilo, Nikita A. Zhidovtsev, G. E. Rizaev, I. A. Nikolaeva, Andrey A. Ionin, Olga G. Kosareva, Nikolay Panov, Arnaud Couairon, Aurélien Houard, Daria V. Mokrousova, Andrey B. Savel'ev, D.V. Pushkarev, D. S. Uryupina, Dmitry V. Skryabin, Leonid V. Seleznev |
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| Přispěvatelé: | P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS), Russian Academy of Sciences [Moscow] (RAS), V.E. Zuev Institute of Atmospheric Optics (IAO), Siberian Branch of the Russian Academy of Sciences (SB RAS), Faculty of Physics, Lomonosov Moscow State University, Lomonosov Moscow State University (MSU), Centre de Physique Théorique [Palaiseau] (CPHT), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), Interaction Laser-Matière (ILM), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Department of Physics, University of Bath [Bath] |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nonlinear optics
Laser femtosecond 01 natural sciences Spectral line postfilament 010309 optics Optics Filamentation 0103 physical sciences Applied optics. Photonics Radiology Nuclear Medicine and imaging femtosecond filamentation pulse autocorrelation function 010306 general physics Instrumentation Physics [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] business.industry Autocorrelation technique Pulse duration Atomic and Molecular Physics and Optics TA1501-1820 Pulse (physics) Laser filamenation angle-wavelength spectrum business Maxima Beam (structure) Beam divergence |
| Zdroj: | Photonics Photonics, MDPI, 2021, 8 (10), pp.446. ⟨10.3390/photonics8100446⟩ Photonics, Vol 8, Iss 446, p 446 (2021) |
| ISSN: | 2304-6732 |
| DOI: | 10.3390/photonics8100446⟩ |
| Popis: | International audience; Postfilamentation channel resulting from filamentation of freely propagating 744-nm, 5-mJ, 110-fs pulse in the corridor air is examined experimentally and in simulations. The longitudinal extension of postfilament was determined to be 55–95 m from the compressor output. Using single-shot angle-wavelength spectra measurements, we observed a series of red-shifted maxima in the spectrum, localized on the beam axis with the divergence below 0.5 mrad. In the range 55–70 m, the number of maxima and their red-shift increase with the distance reaching 1 μm, while the pulse duration measured by the autocorrelation technique is approximately constant. Further on, for distances larger than 70 m and up to 95 m, the propagation is characterized by the suppressed beam divergence and unchanged pulse spectrum. The pulse duration increases due to the normal air dispersion. |
| Databáze: | OpenAIRE |
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