Self-focusing in air with phase-stabilized few-cycle light pulses

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Title Self-focusing in air with phase-stabilized few-cycle light pulses
Author Laban, Dane Edward; Wallace, William Carl; Glover, Rohan David; Sang, Robert; Kielpinski, David
Journal Name Optics Letters
Year Published 2010
Place of publication United States
Publisher Optical Society of America
Abstract We investigate the nonlinear optical phenomenon of self-focusing in air with phase-stabilized few-cycle light pulses. This investigation looks at the role of the carrier-envelope phase by observing a filament in air, a nonlinear phenomenon that can be utilized for few-cycle pulse compression [Appl. Phys. B79, 673 (2004)]. We were able to measure the critical power for self-focusing in air to be 18±1 GW for a 6.3 fs pulse centered at 800 nm. Using this value and a basic first-order theory, we predicted that the self-focusing distance should deviate by 790 μm as the carrier-envelope phase is shifted from 0 to π/2 rad. In contrast, the experimental results showed no deviation in the focus distance with a 3σ upper limit of 180 μm. These counterintuitive results show the need for further study of self-focusing dynamics in the few-cycle regime.
Peer Reviewed Yes
Published Yes
Alternative URI
Volume 35
Issue Number 10
Page from 1653
Page to 1655
ISSN 0146-9592
Date Accessioned 2011-01-10
Date Available 2011-03-22T07:07:37Z
Language en_AU
Research Centre Centre for Quantum Dynamics
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Optical Physics
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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