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By mixing two infrared laser pulses of different wavelengths, we generate the continuum harmonic spectrum around a cut-off region. Our obtained harmonic spectra clearly show the possibility of generating isolated attosecond pulses from many-cycle laser pulse.
A dual-chirped optical parametric amplification scheme for generating ultrafast high-power IR pulse is proposed. Using this scheme, we can expect the generation of TW-class IR pulses in 1 ∼ 2 μm.
By mixing two infrared laser pulses of different wavelengths, we generate the continuum harmonic spectrum around a cut-off region. Our obtained harmonic spectra clearly show the possibility of generating isolated attosecond pulses from many-cylse laser pulse.
We have demonstrated efficient generation of water-window X-ray harmonics by using an IR parametric source with neutral rare-gas media. Generation of isolated attosecond pulses by the IR source will be also discussed.
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