Publication: Quasi-phase-matched parametric interactions in proton-exchanged lithium niobate waveguides
Program
KU-Authors
KU Authors
Co-Authors
El Hadi, K.
Baldi P.
Aschieri, P.
De Micheli, M.P.
Ostrowsky, D.B.
Laurell F.
Advisor
Publication Date
Language
English
Type
Journal Title
Journal ISSN
Volume Title
Abstract
We present a review of parametric fluorescence with bulk and guided geometries in quasi-phase matched lithium niobate. Whereas bulk experiments have yielded results close to theoretical predictions, waveguided versions have shown strongly reduced efficiencies. Attributing the observed conversion efficiency reductions to a loss of the material nonlinearity, to a destruction of the inverted domains during the waveguide fabrication, or to both, we carefully studied the influence of the proton-exchange process on the nonlinear and structural properties of the periodically poled lithium niobate. We found that an annealed proton-exchange process can essentially conserve the nonlinearity but will erase the periodic domain structure. This erasure can be avoided by use of a highly diluted proton-exchange melt. This direct proton-exchange process perfectly preserves all the nonlinear optical and structural properties of periodically poled LiNbO3.
Description
Source:
Journal of the Optical Society of America B: Optical Physics
Publisher:
Optical Society of America (OSA)
Keywords:
Subject
Optics