Observed reduced diffraction of focused femtosecond pulses

H. Hasegawa; L. I. Pavlov; Y. Ohshima; L. M. Kovachev; I. Tunchev

doi:10.1117/12.822537

19 December 2008 Observed reduced diffraction of focused femtosecond pulses

H. Hasegawa, L. I. Pavlov, Y. Ohshima, L. M. Kovachev, I. Tunchev

Proceedings Volume 7027, 15th International School on Quantum Electronics: Laser Physics and Applications; 70271N (2008) https://doi.org/10.1117/12.822537
Event: 15th International School on Quantum Electronics: Laser Physics and Applications, 2008, Bourgas, Bulgaria

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.

Citation Download Citation

H. Hasegawa, L. I. Pavlov, Y. Ohshima, L. M. Kovachev, and I. Tunchev "Observed reduced diffraction of focused femtosecond pulses", Proc. SPIE 7027, 15th International School on Quantum Electronics: Laser Physics and Applications, 70271N (19 December 2008); https://doi.org/10.1117/12.822537

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