Second harmonic generation is investigated in lithium niobate channels realized by proton exchange and quasi-phase-matched by surface periodic-poling. The reduction in conversion efficiency at high powers is interpreted in terms of multi-photon absorption via two-color terms, yielding an estimate of the dominating three-photon process. Comment: 2 pages, 6 figures
CHERCHI M, STIVALA S, PASQUAZI A, BUSACCA AC, RIVA SANSEVERINO S, CINO AC, et al. (2008). Second-harmonic generation in surface periodically poled lithium niobate waveguides: on the role of multiphoton absorption. APPLIED PHYSICS. B, LASERS AND OPTICS, 2008, 559-565 [10.1007/s00340-008-3219-8].
Second-harmonic generation in surface periodically poled lithium niobate waveguides: on the role of multiphoton absorption
CHERCHI, Matteo;STIVALA, Salvatore;BUSACCA, Alessandro;RIVA SANSEVERINO, Stefano;CINO, Alfonso Carmelo;
2008-01-01
Abstract
Second harmonic generation is investigated in lithium niobate channels realized by proton exchange and quasi-phase-matched by surface periodic-poling. The reduction in conversion efficiency at high powers is interpreted in terms of multi-photon absorption via two-color terms, yielding an estimate of the dominating three-photon process. Comment: 2 pages, 6 figures
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