作者
Zheng Gong, Xianwen Liu, Yuntao Xu, Mingrui Xu, Joshua B Surya, Juanjuan Lu, Alexander Bruch, Changling Zou, Hong X Tang
发表日期
2019/6/15
期刊
Optics Letters
卷号
44
期号
12
页码范围
3182-3185
出版商
Optical Society of America
简介
Chip-based soliton frequency combs have been demonstrated on various material platforms, offering broadband, mutually coherent, and equally spaced frequency lines desired for many applications. Lithium niobate (LN), possessing both second- and third-order optical nonlinearities, as well as integrability on insulating substrates, has emerged as a novel source for microcomb generation and controlling. Here we demonstrate mode-locked soliton microcombs generated around 2 μm in a high-Q z-cut LN microring resonator. The intracavity photorefractive effect is found to be still dominant over the thermal effect in the 2 μm region, which facilitates direct accessing soliton states in the red-detuned regime, as reported in the telecom band. We also find that intracavity stimulated Raman scattering is greatly suppressed when moving the pump wavelength from the telecom band to 2 μm, thus alleviating Raman–Kerr …
学术搜索中的文章
Z Gong, X Liu, Y Xu, M Xu, JB Surya, J Lu, A Bruch… - Optics letters, 2019