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

Journal Article · Thu Dec 15 04:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.063819· OSTI ID:22095708

Bin, Zeng; Wei, Chu; Guihua, Li; Haisu, Zhang; Jielei, Ni ^[1]; Hui, Gao; Weiwei, Liu ^[2]; Jinping, Yao; Ya, Cheng; Zhizhan, Xu ^[1]; Chin, See Leang ^[3]

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1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
2. Institute of Modern Optics, Nankai University, Tianjin, 300071 (China)
3. Center for Optics, Photonics and Laser (COPL) and Department of Physics, Engineering Physics and Optics, Universite Laval, Quebec City, QC, G1V 0A6 (Canada)

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 {approx}25 times shorter than that obtained by a conventional focusing scheme, resulting in improved high spatial resolution.

• OSTI ID: 22095708
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
FILAMENTS
FOCUSING
LASER RADIATION
LENGTH
PULSES
SPATIAL RESOLUTION