The results of experimental studies of the transverse structure of a laser beam after multiple filamentation are presented. A ring structure of radiation is formed around individual filaments in a beam cross section inside the multiple filamentation domain, and at a dozen meters from it a common ring structure starts forming surrounding postfilamentation light channels (PFC). It is shown that the spectra of the PFC, rings, and beam are significantly different. The ring spectrum broadens asymmetrically relative to the carrier wavelength and is mainly concentrated in the short wavelength region. The PFC spectrum has a significant and more symmetrical broadening and covers the range 630–1000 nm.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
Self-Focusing: Past and Present. Fundamentals and Prospects, Ed. by R.W. Boyd, S.G. Lukishova, and Y.R. Shen (Springer, Berlin, 2009), p. 3–19.
Yu. E. Geints, A. A. Zemlyanov, A. M. Kabanov, and G. G. Matvienko, Nonlinear Femtosecond Atmospheric Optics, Ed. by A.A. Zemlyanov (Publishing House of IAO SB RAS, Tomsk, 2010) [in Russian]
G. Mehain, A. Couairon, Y.-B. Andre, C. D' Amico, M. Franco, B. Prade, S. Tzortzakis, A. Mysyrowicz, and R. Sauerbrey, “Long-range self-channeling of infrared laser pulses in air: A new propagation regime without ionization,” Appl. Phys. B 79, 379–382 (2004).
Hui Gao, Weiwei Liu, and See Leang Chin, “Post-filamentation multiple light channel formation in air,” Laser Phys. 24, 055301–055308 (2014). doi 10.1088/1054-660X/24/5/055301
J.-F. Daigle, O. Kosareva, N. Panov, T.-J. Wang, S. Hosseini, S. Yuan, G. Roy, and S. L. Chin, “Formation and evolution of intense, post-filamentation, ionization-free low divergence beams,” Opt. Commun. 284, 3601–3606 (2011).
Yu. E. Geints, A. A. Zemlyanov, A. M. Kabanov, G. G. Matvienko, and A. N. Stepanov, “Self-action of tightly focused femtosecond laser radiation in air in a filamentation regime: Laboratory and numerical experiments,” Atmos. Ocean. Opt. 22 (2), 150–157 (2009).
D. V. Apeksimov, A. A. Zemlyanov, A. M. Kabanov, and A. N. Stepanov, “Post-filamentation light channels in air,” Atmos. Ocean. Opt. 30 (5), 451–455 (2017).
N. G. Ivanov and V. F. Losev, “Kerr nonlinearity effect on femtosecond pulse radiation filamentation in air,” Atmos. Ocean. Opt. 30 (4), 331–336 (2017).
Yu. E. Geints, A. A. Zemlyanov, A. A. Ionin, D. V. Mokrousova, L. V. Seleznev, and E. S. Sunchugasheva, “Parameters of intense light channels during the postfilamentation stage of ultrashort laser radiation evolution,” Atmos. Ocean. Opt. 30 (3), 217–221 (2017).
D. V. Apeksimov, A. A. Zemlyanov, A. N. Iglakova, A. M. Kabanov, O. I. Kuchinskaya, G. G. Matvienko, V. K. Oshlakov, and A. V. Petrov, “Postfilamentation channels of terawatt pulses Ti:sapphire-laser in distribution on 150-meter track,” Proc. SPIE 10035, CID: 1003 2M [10035–251] (2016).
S. L. Chin, S. Petit, W. Liu, A. Iwasaki, M.-C. Nadeu, V. P. Kandidov, O. G. Kosareva, and K. Yu. Andrianov, “Interference of transverse rings in multifilamentation of powerful femtosecond laser pulses in air,” Opt. Commun. 210, 329 (2002).
D. V. Apeksimov, S. S. Golik, A. A. Zemlyanov, A. N. Iglakova, A. M. Kabanov, O. I. Kuchinskaya, G. G. Matvienko, V. K. Oshlakov, A. V. Petrov, and E. B. Sokolova, “Multiple filamentation of collimated laser radiation in water and glass,” Atmos. Ocean. Opt. 29 (2), 135–140 (2016).
M. Born and E. Wolf, Principles of Optics (Pergamon Press, 1970), 4th ed.
Yu. E. Geints, D. V. Apeksimov, and A. V. Afonasenko, RF Certificate of Registration of Computer Program No. 2014616871 (June 7, 2014).
N. Akozbek, M. Scalora, C. Bowden, and S. L. Chin, “White-light continuum generation and filamentation during the propagation of ultra-short laser pulses in air,” Opt. Communs. 191, 353–362 (2001).
S. A. Akhmanov, A. P. Sukhorukov, and R. V. Khokhlov, “Self-focusing and diffraction of light in a nonlinear medium,” Phys.-Uspekhi 10, 609–636 (1968).
Original Russian Text © D.V. Apeksimov, A.A. Zemlyanov, A.N. Iglakova, A.M. Kabanov, O.I. Kuchinskaya, G.G. Matvienko, V.K. Oshlakov, A.V. Petrov, E.B. Sokolova, 2017, published in Optika Atmosfery i Okeana.
About this article
Cite this article
Apeksimov, D.V., Zemlyanov, A.A., Iglakova, A.N. et al. Localized High-Intensity Light Structures during Multiple Filamentation of Ti:Sapphire-Laser Femtosecond Pulses along an Air Path. Atmos Ocean Opt 31, 107–111 (2018). https://doi.org/10.1134/S1024856018020033
- laser radiation
- femtosecond pulse
- postfilamentation light channels