Influence of refocusing of femtosecond laser pulses in air on third harmonic generation

The refocusing of femtosecond laser pulses forming the filament in air is studied both numerically and experimentally. The evolution of fundamental as well as third harmonic pulses and spectra during propagation in the filament is discussed. It is shown that the refocusing of the pulse gives rise to...

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Bibliographic Details
Published in:Optics communications 2015-07, Vol.347, p.102-107
Main Authors: Pyragaite, V., Steponkevičius, K., Makauskas, B., Žeimys, E., Vaičaitis, V.
Format: Article
Language:English
Subjects:
Femtosecond
Self-focusing
Spectral shifts
Third harmonic generation
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Summary:The refocusing of femtosecond laser pulses forming the filament in air is studied both numerically and experimentally. The evolution of fundamental as well as third harmonic pulses and spectra during propagation in the filament is discussed. It is shown that the refocusing of the pulse gives rise to enhanced spectral shifts of fundamental and third harmonic waves.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2015.03.006