Extended phase matching of high harmonics driven by mid-infrared light

TY - JOUR

T1 - Extended phase matching of high harmonics driven by mid-infrared light

AU - Popmintchev, Tenio

AU - Chen, Ming Chang

AU - Cohen, Oren

AU - Grisham, Michael E.

AU - Rocca, Jorge J.

AU - Murnane, Margaret M.

AU - Kapteyn, Henry C.

PY - 2008/9/15

Y1 - 2008/9/15

N2 - We demonstrate that phase-matched frequency upconversion of ultrafast laser light can be extended to shorter wavelengths by using longer driving laser wavelengths. Experimentally, we show that the phasematching cutoff for harmonic generation in argon increases from 45 to 100 eV when the driving laser wavelength is increased from 0.8 to 1.3 μm. Phase matching is also obtained at higher pressures using a longer-wavelength driving laser, mitigating the unfavorable scaling of the single-atom response. Theoretical calculations suggest that phase-matched high harmonic frequency upconversion driven by mid-infrared pulses could be extended to extremely high photon energies.

AB - We demonstrate that phase-matched frequency upconversion of ultrafast laser light can be extended to shorter wavelengths by using longer driving laser wavelengths. Experimentally, we show that the phasematching cutoff for harmonic generation in argon increases from 45 to 100 eV when the driving laser wavelength is increased from 0.8 to 1.3 μm. Phase matching is also obtained at higher pressures using a longer-wavelength driving laser, mitigating the unfavorable scaling of the single-atom response. Theoretical calculations suggest that phase-matched high harmonic frequency upconversion driven by mid-infrared pulses could be extended to extremely high photon energies.

UR - http://www.scopus.com/inward/record.url?scp=54749140898&partnerID=8YFLogxK

U2 - 10.1364/OL.33.002128

DO - 10.1364/OL.33.002128

M3 - 文章

AN - SCOPUS:54749140898

SN - 0146-9592

VL - 33

SP - 2128

EP - 2130

JO - Optics Letters

JF - Optics Letters

IS - 18

ER -