基于与高Q铌酸锂微环谐振器自注入锁定的波长可调窄线宽激光二极管

Wavelength-Tunable Narrow-Linewidth Laser Diode Based on Self-Injection Locking with a High-Q Lithium Niobate Microring Resonator.

作者信息

Huang Ting, Ma Yu, Fang Zhiwei, Zhou Junxia, Zhou Yuan, Wang Zhe, Liu Jian, Wang Zhenhua, Zhang Haisu, Wang Min, Xu Jian, Cheng Ya

机构信息

The Extreme Optoelectromechanics Laboratory (XXL), School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.

State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China.

出版信息

Nanomaterials (Basel). 2023 Mar 6;13(5):948. doi: 10.3390/nano13050948.

DOI:10.3390/nano13050948

PMID:36903826

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10005327/

Abstract

We demonstrate a narrow linewidth 980 nm laser by self-injection locking of an electrically pumped distributed-feedback (DFB) laser diode to a high quality (Q) factor (>10) lithium niobate (LN) microring resonator. The lithium niobate microring resonator is fabricated by photolithography-assisted chemo-mechanical etching (PLACE) technique, and the Q factor of lithium niobate microring is measured as high as 6.91 × 10. The linewidth of the multimode 980 nm laser diode, which is ~2 nm measured from its output end, is narrowed down to 35 pm with a single-mode characteristic after coupling with the high-Q LN microring resonator. The output power of the narrow-linewidth microlaser is about 4.27 mW, and the wavelength tuning range reaches 2.57 nm. This work explores a hybrid integrated narrow linewidth 980 nm laser that has potential applications in high-efficient pump laser, optical tweezers, quantum information, as well as chip-based precision spectroscopy and metrology.

摘要

我们通过将电泵浦分布反馈（DFB）激光二极管自注入锁定到高品质因数（Q>10）的铌酸锂（LN）微环谐振器，展示了一种窄线宽980 nm激光器。铌酸锂微环谐振器采用光刻辅助化学机械蚀刻（PLACE）技术制造，测得铌酸锂微环的品质因数高达6.91×10。从输出端测得的多模980 nm激光二极管线宽约为2 nm，与高Q值铌酸锂微环谐振器耦合后，线宽缩小至35 pm并具有单模特性。窄线宽微激光器的输出功率约为4.27 mW，波长调谐范围达到2.57 nm。这项工作探索了一种混合集成窄线宽980 nm激光器，其在高效泵浦激光器、光镊、量子信息以及基于芯片的精密光谱学和计量学方面具有潜在应用。