Open AccessBroadband supercontinuum generation method combining mid-infrared chirped-pulse modulation and generalized polarization gating
Author(s) -
Hongchuan Du,
Bitao Hu
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.025958
Subject(s) - supercontinuum , optics , polarization (electrochemistry) , high harmonic generation , water window , physics , self phase modulation , gating , attosecond , nonlinear optics , optoelectronics , ultrashort pulse , materials science , wavelength , laser , photonic crystal fiber , physiology , chemistry , biology
We present a method to control the harmonic process by a mid-infrared modulated generalized polarization gating for the generation of the broadband supercontinuum. Using a mid-IR generalized polarization gating modulated by a weaker mid-IR linearly polarized chirped field, the ionization, acceleration and recombination steps in the HHG process are simultaneously controlled, leading to the efficient generation of an ultra-broadband supercontinuum covered by the spectral range from ultraviolet to water window x-ray. Using this method we expect that isolated sub-100 attosecond pulses with tunable wavelength could be obtained straightforwardly.