Mechanism of phase-energy coupling in f-to-2f interferometry.
White-light generation has been used widely in single-shot f-to-2f interferometers for stabilizing the carrier-envelope (CE) phase of laser amplifiers. The accuracy of the relative phase values measured by such an interferometer is affected by fluctuations in the laser pulse energy. A simple two-step model is proposed to explain the mechanism that couples the laser energy and the CE phase. The model explains the experimentally observed dependence of the group delay between the f and the 2f pulses on the laser energy, as well as the CE phase shift caused by the pulse energy variation.
Li
Chengquan
C
J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA.
Moon
Eric
E
Mashiko
Hiroki
H
Wang
He
H
Nakamura
Christopher M
CM
Tackett
Jason
J
Chang
Zenghu
Z