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European Quantum Electronics Conference (EQEC)

Nonlinear Phase shift by Cascaded Quasi-Phase-Matched Second harmonic Generation

D.V. Petros

Published Jan 1, 1996• 2 citations
Publisher
DOI
10.1109/eqec.1996.561739

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Cascaded nonlinear phase shifts via second-harmonic generation are theoretically studied for quasi-phase-matched (QPM) structures. Both the effective phase mismatch and the structure itself contribute to the resultant nonlinear phase shift. Depending on the sign of the effective phase mismatch, structural contribution may enhance or depress the nonlinear phase shift. The fundamental wave will experience a nonlinear phase shift even if the effective phase matching is satisfied. By properly designing the effective phase mismatch, QPM structures with large material-based phase mismatch may provide large nonlinear phase shifts before saturation.
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