Abstract

Lithium tantalate (LT) is one of the most attractive optical nonlinear materials, as it possesses a high optical damage threshold and great UV transparency (0.28–5.5 µm). Recently, optical grade LT nanoscale film was developed. Here a high-quality-factor ($\sim{10^5}$) LT microdisk resonator based on LT-on-insulator (LTOI) film is fabricated by utilizing focused ion beam (FIB) milling. 2 µW output second-harmonic waves are achieved in the LTOI microdisk at about 500 mW input power. Cascaded third-harmonic generation is also observed in the fabricated device. This work may pave the way for LTOI in integrated photonic chips.

© 2020 Optical Society of America

On-chip erbium–ytterbium-co-doped lithium niobate microdisk laser with an ultralow threshold

Qiang Luo, Chen Yang, Zhenzhong Hao, Ru Zhang, Rui Ma, Dahuai Zheng, Hongde Liu, Xuanyi Yu, Feng Gao, Fang Bo, Yongfa Kong, Guoquan Zhang, and Jingjun Xu
Opt. Lett. 48(13) 3447-3450 (2023)

Sum-frequency generation in lithium-niobate-on-insulator microdisk via modal phase matching

Xiaona Ye, Shijie Liu, Yuping Chen, Yuanlin Zheng, and Xianfeng Chen
Opt. Lett. 45(2) 523-526 (2020)

Cascading second-order nonlinear processes in a lithium niobate-on-insulator microdisk

Shijie Liu, Yuanlin Zheng, and Xianfeng Chen
Opt. Lett. 42(18) 3626-3629 (2017)

Dual-periodically poled lithium niobate microcavities supporting multiple coupled parametric processes

Li Zhang, Zhenzhong Hao, Qiang Luo, Ang Gao, Ru Zhang, Chen Yang, Feng Gao, Fang Bo, Guoquan Zhang, and Jingjun Xu
Opt. Lett. 45(12) 3353-3356 (2020)

On-chip microdisk laser on Yb³⁺-doped thin-film lithium niobate

Yuan Zhou, Zhe Wang, Zhiwei Fang, Zhaoxiang Liu, Haisu Zhang, Difeng Yin, Youting Liang, Zhihao Zhang, Jian Liu, Ting Huang, Rui Bao, Rongbo Wu, Jintian Lin, Min Wang, and Ya Cheng
Opt. Lett. 46(22) 5651-5654 (2021)