Second harmonic generation in nano-structured thin-film lithium niobate waveguides
Optics
2017-03-20 v2
Abstract
Integrated thin-film lithium niobate platform has recently emerged as a promising candidate for next-generation, high-efficiency wavelength conversion systems that allow dense packaging and mass-production. Here we demonstrate efficient, phase-matched second harmonic generation in lithographically-defined thin-film lithium niobate waveguides with sub-micron dimensions. Both modal phase matching in fixed-width waveguides and quasi-phase matching in periodically grooved waveguides are theoretically proposed and experimentally demonstrated. Our low-loss (~ 3.0 dB/cm) nanowaveguides possess normalized conversion efficiencies as high as 41% W-1cm-2.
Cite
@article{arxiv.1610.04197,
title = {Second harmonic generation in nano-structured thin-film lithium niobate waveguides},
author = {Cheng Wang and Xiao Xiong and Nicolas Andrade and Vivek Venkataraman and Xi-Feng Ren and Guang-Can Guo and Marko Lončar},
journal= {arXiv preprint arXiv:1610.04197},
year = {2017}
}