Siddharth, AnatAttanasio, AlainaLihachev, GrigoryWang, Rui N.Qiu, ZheruKenning, ScottBhave, Sunil A.Riemensberger, JohannKippenberg, Tobias J.2025-01-262025-01-262025-01-25202410.1364/ofc.2024.m1d.62-s2.0-85211707002https://infoscience.epfl.ch/handle/20.500.14299/244688We demonstrate hybrid integration of an RSOA with an extended-distributed Bragg reflector (E-DBR) laser cavity implemented on a Si3N4 chip with monolithically integrated piezoactuators. The laser exhibits intrinsic linewidth of 4 Hz with laser frequency tuning over 1.0 GHz at up to 1 MHz triangular chirp rate.falsetext::conference output::conference proceedings::conference paper