An investigation is made of ultrafast pump–probe pulse collisions near the zero-dispersion wavelength in an optical single-mode fiber. A steplike probe frequency shift is observed when the pump power is gradually increased. The magnitude of this frequency jump is shown to depend on the phase difference between the pulses. This new effect is investigated numerically and experimentally and is attributed to four-wave mixing.
© 2001 Optical Society of America
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7140) Ultrafast optics : Ultrafast processes in fibers
Björn Hall, Dan Anderson, Mietek Lisak, Gilbert Boyer, Magnus Karlsson, and Anders Berntson, "Pump–probe collision in optical fibers: four-wave-mixing induced frequency jump," J. Opt. Soc. Am. B 18, 1652-1658 (2001)