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Opt Lett. 1998;23(9):673-5.

Lateral patterning of nonlinear frequency conversion with transversely varying quasi-phase-matching gratings.

Abstract

We demonstrate control of the nonlinear conversion across a beam profile by using periodically poled lithium niobate with a laterally nonuniform quasi-phase-matching grating. As a representative experiment, generation of a flat-top second-harmonic beam is demonstrated.

PMID:
18087306
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