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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 7 — Mar. 31, 2008
  • pp: 4465–4470

Laser chirp effect on femtosecond laser filamentation generated for pulse compression

Juyun Park, Jae-hwan Lee, and Chang Hee Nam  »View Author Affiliations

Optics Express, Vol. 16, Issue 7, pp. 4465-4470 (2008)

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The influence of laser chirp on the formation of femtosecond laser filamentation in Ar was investigated for the generation of few-cycle high-power laser pulses. The condition for the formation of a single filament has been carefully examined using 28-fs laser pulses with energy over 3 mJ. The filament formation and output spectrum changed very sensitively to the initial laser chirp and gas pressure. Much larger spectral broadening was obtained with positively chirped pulses, compared to the case of negatively chirped pulses that generated much longer filament, and compressed pulses of 5.5 fs with energy of 0.5 mJ were obtained from the filamentation of positively chirped 30-fs laser pulses in a single Ar cell.

© 2008 Optical Society of America

OCIS Codes
(320.0320) Ultrafast optics : Ultrafast optics
(320.5520) Ultrafast optics : Pulse compression
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

Original Manuscript: February 11, 2008
Revised Manuscript: March 14, 2008
Manuscript Accepted: March 15, 2008
Published: March 18, 2008

Juyun Park, Jae-hwan Lee, and Chang H. Nam, "Laser chirp effect on femtosecond laser filamentation generated for pulse compression," Opt. Express 16, 4465-4470 (2008)

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