Abstract
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 language | English |
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Pages | 11692-6 |
DOIs | |
Publication status | Published - 6 Mar 2021 |
Event | SPIE Photonics West 2021 - San Francisco (Online), United States Duration: 6 Mar 2021 → 11 Mar 2021 https://spie.org/conferences-and-exhibitions/photonics-west |
Conference
Conference | SPIE Photonics West 2021 |
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Country/Territory | United States |
City | San Francisco (Online) |
Period | 6/03/21 → 11/03/21 |
Internet address |