Abstract

The long light filaments generated in air by powerful ultrashort laser pulses, previously attributed to self-channeling, were investigated by use of gigawatt pulses from a Ti:sapphire chirped-pulse-amplification laser system. A filament contained only a small fraction of the pulse energy and always ended at the diffraction length of the beam (~100 m), independently of the pulse energy. These features are explained by the moving-focus model, which is presented as an alternative to the self-channeling model. Computer simulations involving ionization of the air also support the moving-focus model.

© 1997 Optical Society of America

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1996

1995

A. Braun, G. Korn, X. Liu, D. Du, J. Squier, and G. Mourou, Opt. Lett. 20, 73 (1995).

X. M. Zhao, P. Rambo, and J.-C. Diels, in Quantum Electronics and Lasers, Vol. 16 of 1995 Technical Digest Series (Optical Society of America, Washington, D.C., 1995), p. 178.

1994

1987

A. Szoke, in Atomic and Molecular Processes with Short Intense Laser Pulses, A. D. Bandrauk, ed. (Plenum, New York, 1987), p. 207.

1972

E. Yablonovitch and N. Bloembergen, Phys. Rev. Lett. 29, 907 (1972).

Bloembergen, N.

E. Yablonovitch and N. Bloembergen, Phys. Rev. Lett. 29, 907 (1972).

Braun, A.

Corkum, P. B.

Curley, P. F.

Diels, J.-C.

X. M. Zhao, P. Rambo, and J.-C. Diels, in Quantum Electronics and Lasers, Vol. 16 of 1995 Technical Digest Series (Optical Society of America, Washington, D.C., 1995), p. 178.

Du, D.

Franco, M. A.

Grillon, G.

Korn, G.

Kosareva, O. G.

O. G. Kosareva and S. A. Shlyonov, Izvest. Akad. Nauk SSSR 56, 56 (1992).

Liu, X.

Marburger, J. H.

J. H. Marburger, Prog. Quantum Electron. 4, 35 (1975).

Mourou, G.

Mysryowicz, A.

Nibbering, E. T. J.

Prade, B. S.

Rambo, P.

X. M. Zhao, P. Rambo, and J.-C. Diels, in Quantum Electronics and Lasers, Vol. 16 of 1995 Technical Digest Series (Optical Society of America, Washington, D.C., 1995), p. 178.

Salin, F.

Shen, Y. R.

Y. R. Shen, Quantum Electron. 4, 1 (1975).

Shlyonov, S. A.

O. G. Kosareva and S. A. Shlyonov, Izvest. Akad. Nauk SSSR 56, 56 (1992).

Squier, J.

Strickland, D.

Szoke, A.

A. Szoke, in Atomic and Molecular Processes with Short Intense Laser Pulses, A. D. Bandrauk, ed. (Plenum, New York, 1987), p. 207.

Yablonovitch, E.

E. Yablonovitch and N. Bloembergen, Phys. Rev. Lett. 29, 907 (1972).

Zhao, X. M.

X. M. Zhao, P. Rambo, and J.-C. Diels, in Quantum Electronics and Lasers, Vol. 16 of 1995 Technical Digest Series (Optical Society of America, Washington, D.C., 1995), p. 178.

Izvest. Akad. Nauk SSSR

O. G. Kosareva and S. A. Shlyonov, Izvest. Akad. Nauk SSSR 56, 56 (1992).

J. Opt. Soc. Am. B

Opt. Lett.

Phys. Rev. Lett.

E. Yablonovitch and N. Bloembergen, Phys. Rev. Lett. 29, 907 (1972).

Prog. Quantum Electron.

J. H. Marburger, Prog. Quantum Electron. 4, 35 (1975).

Quantum Electron.

Y. R. Shen, Quantum Electron. 4, 1 (1975).

Other

X. M. Zhao, P. Rambo, and J.-C. Diels, in Quantum Electronics and Lasers, Vol. 16 of 1995 Technical Digest Series (Optical Society of America, Washington, D.C., 1995), p. 178.

A. Szoke, in Atomic and Molecular Processes with Short Intense Laser Pulses, A. D. Bandrauk, ed. (Plenum, New York, 1987), p. 207.

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