par Kuyken, Bart;Iablokov, Viacheslav 
;Holzner, S;Yan, M;Hansch, T;Van Campenhout, Joris;Verheyen, Peter;Coen, Stéphane ;Leo, François ;Baets, Roel G. F.;Roelkens, Gunther;Picque, N
Référence Nature communications, 6, 6310
Publication Publié, 2015
;Holzner, S;Yan, M;Hansch, T;Van Campenhout, Joris;Verheyen, Peter;Coen, Stéphane ;Leo, François ;Baets, Roel G. F.;Roelkens, Gunther;Picque, NRéférence Nature communications, 6, 6310
Publication Publié, 2015
Article révisé par les pairs
| Résumé : | Laser frequency combs, sources with a spectrum consisting of hundred thousands evenly spaced narrow lines, have an exhilarating potential for new approaches to molecular spectroscopy and sensing in the mid-infrared region. The generation of such broadband coherent sources is presently under active exploration. Technical challenges have slowed down such developments. Identifying a versatile highly nonlinear medium for significantly broadening a mid-infrared comb spectrum remains challenging. Here we take a different approach to spectral broadening of mid-infrared frequency combs and investigate CMOS-compatible highly nonlinear dispersion-engineered silicon nanophotonic waveguides on a silicon-on-insulator chip. We record octave-spanning (1,500-3,300 nm) spectra with a coupled input pulse energy as low as 16 pJ. We demonstrate phase-coherent comb spectra broadened on a room-temperature-operating CMOS-compatible chip. © 2015 Macmillan Publishers Limited. |
