Physics – Optics
Scientific paper
2009-06-19
Appl. Phys. B 93, 559-565, (2008)
Physics
Optics
2 pages, 6 figures
Scientific paper
10.1007/s00340-008-3219-8
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.
Assanto Gaetano
Busacca Alessandro C.
Cherchi Matteo
Cino Alfonso C.
Colace L.
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