Large phase shifts due to the chi((2)) cascading nonlinearity in large walk-off and loss regimes in semiconductors and other dispersive materials
Abbreviated Journal Title
Jpn. J. Appl. Phys. Part 2 - Lett.
cascading nonlinearity; nonlinear phase shift; temporal walk-off; dispersion; semiconductor; KTP; DEVICES; Physics, Applied
The nonlinear phase shift associated with chi((2)) cascading was studied for ultrashort pulses in regimes with large temporal walk-offs between the fundamental and the chi((2))-generated second-harmonic (SH) pulses, a situation typical of semiconductors. Despite the small overlap between the fundamental and SH pulses after they walk-off each other: a nonlinear phase shift was numerically observed to occur at a rate comparable to that before they walk-off. A pi/2 phase shift was demonstrated even in a waveguide 15 times longer than the walk-off length.
Japanese Journal of Applied Physics Part 2-Letters
"Large phase shifts due to the chi((2)) cascading nonlinearity in large walk-off and loss regimes in semiconductors and other dispersive materials" (1997). Faculty Bibliography 1990s. 2121.