SCIENTIFIC PUBLICATION: Compact low-noise photonic microwave generation from commercial low-noise lasers
Compact low-noise photonic microwave generation from commercial low-noise lasers
Bouchand, X. Xie, M. Giunta, W. Hänsel, M. Lezius, R. Holzwarth, C. Alexandre, P.-A. Tremblin, G. Santarelli, & Y. Le Coq
We demonstrate how phase-locking a whispering gallery mode-stabilized semiconductor laser to a high-stability Erbium-based distributed feedback fiber laser makes an outstanding optical reference for photonic microwave generation using an optical frequency comb. Using only commercially available compact lasers, it allows generation of a 12-GHz microwave signal with absolute levels of phase noise below -47 dBc/Hz at 1 Hz and -170 dBc/Hz at 50 kHz from the carrier.