Mitigating photorefractive effect in thin-filmlithium niobate microring resonators
Abstract
Thin-film lithium niobate is an attractive integrated photonics platform due to its low optical loss and favorable optical nonlinear and electro-optic properties. However, in applications such as second harmonic generation, frequency comb generation, and microwave-to-optics conversion, the device performance is strongly impeded by the photorefractive effect inherent in thin-films. In this paper, we show that the dielectric cladding on lithium niobate microring resonator has a significant influence on the photorefractive effect. By removing the dielectric cladding layer, the photorefractive effect in lithium niobate ring resonators can be effectively mitigated. Our work presents a reliable approach to control the photorefractive effect on thin-film lithium niobate and will further advance the performance of integrated classical and quantum photonic devices based on thin-film lithium niobate.
Cite
@article{arxiv.2012.12671,
title = {Mitigating photorefractive effect in thin-filmlithium niobate microring resonators},
author = {Yuntao Xu and Mohan Shen and Juanjuan Lu and Joshua Surya and Ayed Al Sayem and Hong X. Tang},
journal= {arXiv preprint arXiv:2012.12671},
year = {2021}
}