Open AccessEfficient generation of ultra-broadband supercontinuum in the mid-infrared polarization gating
Author(s) -
Kunlong Liu,
Hong Wei-Yi,
Shaoyi Wang,
Qingbin Zhang,
Peixiang Lu
Publication year - 2011
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.60.063203
Subject(s) - supercontinuum , gating , optics , polarization (electrochemistry) , materials science , optoelectronics , infrared , high harmonic generation , wavelength , physics , laser , photonic crystal fiber , chemistry , physiology , biology
We theoretically investigate the process of the efficient ultra-broadband supercontinuum generation in the mid-infrared polarization gating. The polarization gating at 2000 nm is adopted to restrict the recombination of the electron into one-half optical cycle and extend the spectrum cut-off to 270 eV. And a 0.5 fs ultraviolet pulse is synthesized to the polarization gating to control the ionization process. Then the harmonic intensity is enhanced by 4—5 orders, and a 240eV supercontinuum is obtained, supporting a 16 as pulse generation. By filtering out different ranges of the supercontinuum, isolated 110 as pulses with tunable central wavelengths are efficiently generated.