Stable interference between the outputs of two noncollinearly phase-matched optical parametric amplifiers seeded by separate white-light continua has been observed. This means that the tunable visible pulses have a well-defined relative phase and that the temporal jitter between them is less than 1 fs. The residual phase variations are due to fluctuations of the pump power.
© 2003 Optical Society of America
(030.1670) Coherence and statistical optics : Coherent optical effects
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
P. Baum, S. Lochbrunner, J. Piel, and E. Riedle, "Phase-coherent generation of tunable visible femtosecond pulses," Opt. Lett. 28, 185-187 (2003)