Narrow-linewidth hybrid-integrated semiconductor lasers by exploiting feedback from Si3N4 circuits

Albert van Rees, Youwen Fan, J. Mak, Rob E.M. Lammerink, Cornelis A.A. Franken, Ruud M. Oldenbeuving, Dimitri Geskus, Jörn P. Epping, Marcel Hoekman, Ronald Dekker, Edwin J. Klein, Douwe H. Geuzebroek, Chris G.H. Roeloffzen, Carsten Fallnich, P.J.M. van der Slot, K.-J. Boller

Research output: Contribution to conferenceAbstractAcademic

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Hybrid integration of semiconductor optical amplifiers with frequency-selective feedback circuits, implemented using low-loss Si3N4 waveguides, enables robust chip-sized lasers with outstanding properties. Deploying ring resonators as a tunable feedback filter provides single-mode operation over a wide wavelength range. Moreover, these rings resonantly enhance the cavity length, which results in ultra-narrow intrinsic linewidth, as low as 40 Hz. Here, we present an overview on state-of-the-art developments regarding these lasers. We compare linewidth and tuning results for different feedback circuit configurations. Finally, we report on the first demonstration of a hybrid-integrated semiconductor laser that operates in the visible wavelength range.
Original languageEnglish
Publication statusPublished - 6 Mar 2021
EventSPIE Photonics West 2021 -
Duration: 6 Mar 202111 Mar 2021


ConferenceSPIE Photonics West 2021
Internet address


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