P08 - FORMATION OF NANO DOMAINS DURING THE FABRICATION OF SPE WAVEGUIDES ON A PPLN CRYSTAL AND ITS IMPACT ON THE SHG EFFICIENCY.
Maxim Neradovskiy  1, *@  , Natacha Naumova  1  , Denis Alikin  1  , Vladimir Shur  1@  , Hervé Tronche  2@  , Emmanuel Quiller  2  , Pascal Baldi  2@  , Marc De Micheli  2, *@  
1 : Institute of Natural Sciences, Ferroelectric Laboratory, Ural Federal University  (Labfer)  -  Site web
Institute of Natural Sciences, Ferroelectric Laboratory, Ural Federal University, 620000 Ekaterinburg, -  Russie
2 : Laboratoire de physique de la matière condensée  (LPMC)  -  Site web
CNRS : UMR7336, Université Nice Sophia Antipolis (UNS)
LPMC, Parc Valrose 06100 NICE CEDEX -  France
* : Auteur correspondant

In this paper we present the study of nano domains formation during the fabrication of channel waveguides produced by Soft Proton Exchange (SPE) in periodically poled congruent lithium niobate (PPLN) crystal. The study was performed using complementary experimental methods such as Piezoresponse Force Microscopy (PFM) and Confocal Raman Microscopy (CRM). It shows that the waveguide fabrication process induces the formation of needle like nano domains on the Z- oriented surface that may be responsible for the poor nonlinear behavior of the waveguides.


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