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Proceedings Paper

Observed reduced diffraction of focused femtosecond pulses
Author(s): H. Hasegawa; L. I. Pavlov; Y. Ohshima; L. M. Kovachev; I. Tunchev
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Paper Abstract

We present experimental evidence of reduced diffraction for focused femtosecond laser pulses at input power well under the critical value of self-focusing. Unexpected stability of propagation is recorded even at very low input power, in deep linear regime. The shape of the pulses is more close to Gaussian one, and they admit spectral properties quite different than X waves. Nonparaxial model for explanation of the observed experimental results is suggested.

Paper Details

Date Published: 19 December 2008
PDF: 7 pages
Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 70271N (19 December 2008); doi: 10.1117/12.822537
Show Author Affiliations
H. Hasegawa, Institute for Molecular Science (Japan)
L. I. Pavlov, Institute of Nuclear Research and Nuclear Energy (Bulgaria)
Y. Ohshima, Institute for Molecular Science (Japan)
L. M. Kovachev, Institute of Electronics (Bulgaria)
I. Tunchev, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 7027:
15th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Elena Taskova; Ekaterina Borisova; Alexander Serafetinides, Editor(s)

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