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Enhancement of peak intensity in a filament core with spatiotemporally focused femtosecond laser pulses

Source: Phys. Rev. A 84, 063819 (2012); http://dx.doi.org/10.1103/PhysRevA.84.063819

Published 7 December 2011

PACS
  • 42.65.Re
    Ultrafast processes; optical pulse generation and pulse compression
  • 42.68.Ay
    Atmospheric optical propagation, transmission, attenuation, and radiative transfer
  • 42.68.Wt
    Remote sensing; LIDAR and adaptive systems (atmospheric optics)
  • YEAR: 2011
PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef APS
Bin Zeng,1,3 Wei Chu,1,3 Hui Gao,2 Weiwei Liu,2 Guihua Li,1,3 Haisu Zhang,1,3 Jinping Yao,1 Jielei Ni,1,3 See Leang Chin,4 Ya Cheng,1 and Zhizhan Xu1
1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2Institute of Modern Optics, Nankai University, Tianjin, 300071 China
3Graduate School of Chinese Academy of Sciences, Beijing 100080, China
4Center for Optics, Photonics and Laser (COPL) and Department of Physics, Engineering Physics and Optics, Université Laval, Québec City, QC, Canada, G1V 0A6
We demonstrate that the peak intensity in the filament core, which is inherently limited by the intensity clamping effect during femtosecond laser filamentation, can be significantly enhanced using spatiotemporally focused femtosecond laser pulses. In addition, the filament length obtained by spatiotemporally focused femtosecond laser pulses is ~25 times shorter than that obtained by a conventional focusing scheme, resulting in improved high spatial resolution.
History: Received 8 September 2011; published 7 December 2011
Digital Object Identifier: http://dx.doi.org/10.1103/PhysRevA.84.063819
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