Skehan J Connor, Helgason Óskar B, Schröder Jochen, Torres-Company Victor, Andrekson Peter A
Opt Express. 2022 Jun 20;30(13):22388-22395. doi: 10.1364/OE.457937.
We demonstrate a method to generate a widely and arbitrarily tunable laser source with very narrow linewidth. By seeding a coupled-cavity microcomb with a highly coherent single-frequency laser and using injection locking of a Fabry-Perot laser to select a single output comb tone, a high power, high side mode suppression ratio output wave is obtained. The system is demonstrated across 1530 -1585 nm with a linewidth below 8 kHz, having 5 dBm output power and sidemode suppression of at least 60 dB. Prospects of extending the performance are also discussed.
