Integrated Backward Second-Harmonic Generation Through Optically Induced Quasi-Phase Matching
Optics
2023-10-13 v1
Abstract
Quasi-phase-matching for efficient backward second-harmonic generation (BSHG) requires sub-m poling periods, a non-trivial fabrication feat. For the first time, we report integrated first-order quasi-phase-matched BSHG enabled by seeded all-optical poling. The self-organized grating inscription circumvents all fabrication challenges. We compare backward and forward processes and explain how grating period influences the conversion efficiency. These results showcase unique properties of the coherent photogalvanic effect and how it can bring new nonlinear functionalities to integrated photonics.
Keywords
Cite
@article{arxiv.2302.06875,
title = {Integrated Backward Second-Harmonic Generation Through Optically Induced Quasi-Phase Matching},
author = {Ozan Yakar and Edgars Nitiss and Jianqi Hu and Camille-Sophie Brès},
journal= {arXiv preprint arXiv:2302.06875},
year = {2023}
}