Title :
Measurement of high-order harmonic pulse width and electron recombination time by field ionization
Author :
Kobayashi, Yoshiyuki ; Yoshihara, O. ; Nabekawa, Yasuo ; Kondo, K. ; Watanabe, Shigetaka
Author_Institution :
Inst. for Solid State Phys., Tokyo Univ., Japan
Abstract :
Summary form only given. We demonstrate a pulse width measurement of the high-order harmonic pulse using the change of the bound-free absorption by the femtosecond dynamics of field ionization. The 9th harmonic of Ti:sapphire is absorbed by neutral Kr atoms, but not absorbed by Kr/sup +/ because the photon energy of the 9th harmonic (14.1 eV) is higher than the ionization potential of neutral Kr (14.0 eV), but is lower than that of Kr/sup +/ (24.4 eV).
Keywords :
field ionisation; krypton; optical harmonic generation; Al/sub 2/O/sub 3/:Ti; Kr; Kr/sup +/; Ti:sapphire; bound-free absorption; electron recombination time; femtosecond dynamics; field ionization; high-order harmonic pulse width; ionization potential; neutral Kr atoms; photon energy; pulse width measurement; Electrons; Gas lasers; Ionization; Laser beams; Laser excitation; Probes; Pulse measurements; Space vector pulse width modulation; Spontaneous emission; Time measurement;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-444-0
