High efficiency frequency doubling in fully diced LiNbO3 ridge waveguides on silicon

Mathieu Chauvet (1) , Fabien Henrot (1) , Florent Bassignot (1) , Fabrice Devaux (1) , Ludovic Manuel (1) , Vincent Pêcheur (1) , Hervé Maillotte (1) , I Dahman (2)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 Lovalite s.a.s. - Lovalite s.a.s.

Nonlinear periodically poled ridge LiNbO3 waveguides have been fabricated on silicon substrates. Components are carved with only the use of a precision dicing machine without the need for grinding or polishing steps. They show efficient second harmonic generation at telecommunication wavelengths with normalized conversion reaching 204%/W in a 15 mm long device. The influence of the geometrical non uniformities of waveguides due to fabrication processes is asserted. Characteristics of the components are studied; notably their robustness and tunability versus temperature.

Domaines: Optique [physics.optics]

Mathieu Chauvet, Fabien Henrot, Florent Bassignot, Fabrice Devaux, Ludovic Manuel, et al.. High efficiency frequency doubling in fully diced LiNbO3 ridge waveguides on silicon. Journal of Optics, 2016, 18 (8), pp.085503. ⟨hal-02380326⟩