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Phys Rev Lett. 2006 Jul 14;97(2):023904. Epub 2006 Jul 14.

Tunable ultrashort laser pulses generated through filamentation in gases.

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  • 1Centre d'Optique, Photonique et Laser, COPL, and Département de physique, de génie physique et d'optique, Université Laval, Québec, Québec G1K 7P4, Canada.


Tunable and stable ultrashort laser pulses in the visible spectrum are generated with high efficiency by four-wave mixing process during the filamentation of near-infrared and infrared laser pulses in gases. It is shown that these tunable ultrashort pulses have a very low energy fluctuation and an excellent mode quality due to the processes of intensity clamping and self-filtering in the filament.

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