We present a monolithic single-frequency microring laser utilizing Er^(3+)-doped thin film lithium niobate(TFLN)on insulator.The device is fabricated employing a dual-cavity architecture,in which two microring resonat...We present a monolithic single-frequency microring laser utilizing Er^(3+)-doped thin film lithium niobate(TFLN)on insulator.The device is fabricated employing a dual-cavity architecture,in which two microring resonators are nested through two pulley coupling regions and share a common semicircular cavity.The singlefrequency laser achieves a peak output power of 146μW,with a side mode suppression ratio of 32 dB and slope efficiency of 0.7%,operating at a wavelength of 1530.85 nm,which leverages gain competition and the Vernier effect.Furthermore,the single-frequency laser emission can be selectively switched between 1530.85 nm and 1547.13 nm by a precise adjustment of the device's structural parameters.Our research establishes the foundation for a fully integrated multifunction TFLN system,which exhibits great potential applications in advancing optical computation,bio-chemical sensing,and signal processing.展开更多
基金supported by the National Key R&D Program of China(Grant No.2024YFA1408900)the National Natural Science Foundation of China(Grant Nos.12204176,12192251,12334014,12404378,12134001,12174113,12174107,12474325,12404379,and 12474378)+1 种基金Quantum Science and Technology-National Science and Technology Major Project(Grant No.2021ZD0301403)Shanghai Municipal Science and Technology Major Project(Grant No.2019SHZDZX01)。
文摘We present a monolithic single-frequency microring laser utilizing Er^(3+)-doped thin film lithium niobate(TFLN)on insulator.The device is fabricated employing a dual-cavity architecture,in which two microring resonators are nested through two pulley coupling regions and share a common semicircular cavity.The singlefrequency laser achieves a peak output power of 146μW,with a side mode suppression ratio of 32 dB and slope efficiency of 0.7%,operating at a wavelength of 1530.85 nm,which leverages gain competition and the Vernier effect.Furthermore,the single-frequency laser emission can be selectively switched between 1530.85 nm and 1547.13 nm by a precise adjustment of the device's structural parameters.Our research establishes the foundation for a fully integrated multifunction TFLN system,which exhibits great potential applications in advancing optical computation,bio-chemical sensing,and signal processing.
