On-chip single-mode thin-film lithium niobate Fabry–Perot resonator laser based on Sagnac loop reflectors
Shupeng Yu, Zhiwei Fang, Zhe Wang, Yuan Zhou, QINFEN HUANG, jian Liu, Rongbo Wu, Haisu Zhang, Min Wang, Ya Cheng
Abstract
We demonstrate an on-chip single-mode Er 3+ -doped thin-film lithium niobate (Er:TFLN) laser which consists of a Fabry–Perot (FP) resonator based on Sagnac loop reflectors (SLRs). The fabricated Er:TFLN laser has a footprint of 6.5 mm × 1.5 mm with a loaded quality ( Q ) factor of 1.6 × 10 5 and a free spectral range (FSR) of 63 pm. We generate the single-mode laser at 1544 nm wavelength with a maximum output power of 44.7 µW and a slope efficiency of 0.18%.
Topics & Concepts
Lithium niobateOpticsFabry–Pérot interferometerResonatorMaterials scienceLaserOptoelectronicsPhysicsPhotorefractive and Nonlinear OpticsPhotonic and Optical DevicesAdvanced Fiber Laser Technologies