O. Albert et J. Etchepare, FEMTOSECOND TEMPORAL BEHAVIOR MEASUREMENT OF KERR-LIKE CASCADED 2ND-ORDER NONLINEARITIES, Optics communications, 154(5-6), 1998, pp. 345-349
We present a pump-probe technique that enables to describe the tempora
l behavior of the phase shift induced by cascaded second-order non-lin
earities inherent to frequency mixing processes. We have measured this
shift for degenerate and non-degenerate frequency summation from femt
osecond pulses in a beta-baryum berate crystal. We also demonstrate th
e associate appearance of a non-linear chirp. (C) 1998 Published by El
sevier Science B.V. All rights reserved.