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Conferences > CLEO_QELS > 2016 > FTu3A > FTu3A.3

Observation of Conical Third-harmonic Emission of Vortex Beams via Ultrashort Laser Pulse Filamentation in Air

Yu-Chieh Lin, Yasuo Nabekawa, and Katsumi Midorikawa

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Abstract

We employ a lab-built Ti:sapphire chirped pulse amplifier to generate third-harmonic vortex beams by femtosecond pulse filamentation in air. The generated beams follow the orbital- angular-momentum conservation and phase-matching condition between the fundamental and third-harmonic waves.

© 2016 Optical Society of America

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