Controllable Raman-like nonlinearities from non-stationary cascaded quadratic processes

Details Controllable Raman-like nonlinearities from non-stationary cascaded quadratic processes Controllable Raman-like nonlinearities from non-stationary cascaded quadratic processes

2003-10-07

arxiv.org/abs/physics/0310036v1

J. Opt. Soc. Am. B 21, 376 (2004)

Physics

Optics

To be published in J. Opt. Soc. Am. B

Scientific paper

10.1364/JOSAB.21.000376

We show that useful non-instantaneous nonlinear phase shifts can be obtained from cascaded quadratic processes in the presence of group velocity mismatch. The two-field nature of the process permits responses that can be effectively advanced or retarded in time with respect to one of the fields. There is an analogy to a generalized Raman-scattering effect, permitting both red and blue shifts of short pulses. We expect this capability to have many applications in short-pulse generation and propagation, such as the compensation of Raman-induced effects and high-quality pulse compression, which we discuss.

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