Open AccessCascaded second-order optical nonlinearities in on-chip micro rings
Author(s) -
R. A. Wolf,
Ingo Breunig,
Hans Zappe,
K. Buse
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.029927
Subject(s) - lithium niobate , polishing , optics , materials science , resonator , raman scattering , second harmonic generation , optoelectronics , chip , nonlinear optics , sum frequency generation , raman spectroscopy , physics , computer science , laser , telecommunications , composite material
We demonstrate cascaded Stimulated Raman Scattering (SRS), Second-Harmonic Generation (SHG), and Sum-Frequency Generation (SFG) in integrated on-chip whispering-gallery resonators (WGRs). These lithium niobate-based WGRs are fabricated using highly-parallel semiconductor manufacturing techniques coupled with specialized polishing as a post-processing step and thus represent a novel means for batch fabrication of this family of non-linear devices. We achieved record high Q-factors for on-chip lithium niobate WGRs reaching up to 3 × 10 6 . Furthermore, we present a flexible but stable coupling scheme, which gives us the opportunity to optimize the coupling regarding the non-linear optical processes we observe.