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Opt Express. 2013 Mar 25;21(6):7202-8. doi: 10.1364/OE.21.007202.

Investigation of a planar optical waveguide in 2D PPLN using helium implantation technique.

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  • 1Laboratoire de Physique des Lasers, CNRS UMR 7538, Université de Paris 13, 93430 Villetaneuse, France.


In this work, we report the investigation of a planar waveguide in a 2D periodically-poled lithium niobate (PPLN). The waveguide is fabricated by helium (He(+)) implantation at 2 MeV and a fluence of 1.5 x 10(16) ions/cm(2). Second harmonic generation (SHG) at 532 nm using a Q-switched laser and a CW laser diode at 1064 nm, was measured as a function of angular distribution and temperature. The experimental results show higher gain in SHG conversion efficiency in the waveguide than in the bulk 2D PPLN. In particular, SHGs from 2D reciprocal lattice vectors (RLV) are observed and studied.

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