Applied Physics B

, Volume 103, Issue 2, pp 435–439

Control of filament branching in air by astigmatically focused femtosecond laser pulses

  • Y. Fu
  • H. Gao
  • W. Chu
  • J. Ni
  • H. Xiong
  • H. Xu
  • J. Yao
  • B. Zeng
  • W. Liu
  • Y. Cheng
  • Z. Xu
  • S. L. Chin
Article

DOI: 10.1007/s00340-011-4424-4

Cite this article as:
Fu, Y., Gao, H., Chu, W. et al. Appl. Phys. B (2011) 103: 435. doi:10.1007/s00340-011-4424-4

Abstract

We report on the generation of branched optical filaments in air by astigmatically focusing intense femtosecond laser pulses with a pair of orthogonal cylindrical lenses. It is found that the branching angle can be controlled by changing the distance between the two foci of the cylindrical lenses. The evolution of the filament is systematically investigated by capturing beam cross-section profiles at different locations along its propagation direction. The experimental observation is successfully reproduced by theoretical simulations.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Y. Fu
    • 1
    • 4
  • H. Gao
    • 2
  • W. Chu
    • 1
  • J. Ni
    • 1
  • H. Xiong
    • 1
  • H. Xu
    • 1
  • J. Yao
    • 1
  • B. Zeng
    • 1
  • W. Liu
    • 2
  • Y. Cheng
    • 1
  • Z. Xu
    • 1
  • S. L. Chin
    • 3
  1. 1.State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina
  2. 2.Institute of Modern Optics, Nankai University, Key Laboratory of Opto-electronic Information Science and TechnologyEducation Ministry of ChinaTianjinChina
  3. 3.Centre d’Optique, Photonique et Laser (COPL) and Département de physique, de génie physique et d’optiqueUniversité LavalQuébecCanada
  4. 4.Laser Technology LaboratoryRIKENSaitamaJapan

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