Double optical gating of high-order harmonic generation with carrier-envelope phase stabilized lasers.
We demonstrated a novel optical switch to control the high-order harmonic generation process so that single attosecond pulses can be generated with multiple-cycle pulses. The technique combines two powerful optical gating methods: polarization gating and two-color gating. An extreme ultraviolet supercontinuum supporting 130 as was generated with neon gas using 9 fs laser pulses. We discovered a unique dependence of the harmonic spectra on the carrier-envelope phase of the laser fields, which repeats every 2 pi radians.
Mashiko
Hiroki
H
J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA.
Gilbertson
Steve
S
Li
Chengquan
C
Khan
Sabih D
SD
Shakya
Mahendra M
MM
Moon
Eric
E
Chang
Zenghu
Z