Monolithic erbium- and ytterbium-doped microring lasers on silicon chips

• Main Authors: Bradley, Jonathan DB (Author), Hosseini, Ehsan Shah (Author), Purnawirman (Author), Su, Zhan (Author), Adam, Thomas N (Author), Leake, Gerald (Author), Coolbaugh, Douglas (Author), Watts, Michael R (Author)
• Format: Article
• Language: English
• Published: The Optical Society, 2021-10-27T20:04:02Z.
• Subjects: Article
• Online Access: Get fulltext

 We demonstrate monolithic 160-μm-diameter rare-earth-doped microring lasers using silicon-compatible methods. Pump light injection and laser output coupling are achieved via an integrated silicon nitride waveguide. We measure internal quality factors of up to 3.8 × 105 at 980 nm and 5.7 × 105 at 1550 nm in undoped microrings. In erbium- and ytterbium-doped microrings we observe single-mode 1.5-μm and 1.0-μm laser emission with slope efficiencies of 0.3 and 8.4%, respectively. Their small footprints, tens of microwatts output powers and sub-milliwatt thresholds introduce such rare-earth-doped microlasers as scalable light sources for silicon-based microphotonic devices and systems. © 2014 Optical Society of America.