, Volume 28, Issue 12, pp 1691-1740

χ(2) cascading phenomena and their applications to all-optical signal processing, mode-locking, pulse compression and solitons

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Cascading is the process by which the exchange of energy between optical beams interacting via second order nonlinearities (χ(2)) leads to various effects such as nonlinear phase shifts, the generation of new beams, all-optical transistor action, the formation of soliton-like (solitary) waves, etc. Here we review the fundamentals of the processes and discuss experimental verification of the effects and various related applications.