Open AccessExperimental research of small-scale self-focusing of ultrashort pulse with spatial modulation
Author(s) -
Zhouming Feng,
Xinghu Fu,
Lifu Zhang,
Haiwen Xu,
Shuangchun Wen
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.2253
Subject(s) - ultrashort pulse , optics , femtosecond , femtosecond pulse shaping , multiphoton intrapulse interference phase scan , pulse (music) , scale (ratio) , laser , ultrashort pulse laser , power (physics) , diffraction , modulation (music) , self focusing , materials science , physics , laser beams , acoustics , quantum mechanics , detector
The dynamic process of the small-scale self-focusing of ultrashort laser pulse is experimentally investigated. By using tabletop femtosecond laser, the pulse which is spatially modulated by the crossed-fiber diffraction passes through the carbon bisulfide. With different input power, the small-scale self-focusing of the pulse was obtained. By analyzing the contrast of the beam, we find that the small-scale self-focusing does not increase all along with the increasing of input power, but some new growth points appear in different places. They compete with each other, and finally lead to multiple splitting. The experimental results confirmed the numerical simulation.