We demonstrate a scheme for parametric amplification that allows us to measure the drift of the carrier-envelope phase of the output signal pulses. The method is based on the unique double phase-matching properties of a noncollinearly pumped BBO crystal, making possible the detection of the interference between the signal and the frequency-doubled idler. Additionally, the suggested device greatly simplifies the single-shot measurement of the phase evolution in Ti:sapphire laser amplifiers by dispensing with harmonic synthesis from the spectral edges of an octave-wide supercontinuum.
© 2002 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(320.5550) Ultrafast optics : Pulses
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
Andrius Baltuška, Takao Fuji, and Takayoshi Kobayashi, "Self-referencing of the carrier-envelope slip in a 6-fs visible parametric amplifier," Opt. Lett. 27, 1241-1243 (2002)