Semiconductor THz Frequency Combs Exploiting Solution Processed Graphene

Paper (OPTO11)

Fri, 13 Nov 2020 06:00pm to 06:15pm

Room: Tesla

Attend in Zoom

We nano-engineer a miniaturized optical frequency comb synthesizer (FCS) comprising a heterogeneous THz quantum cascade laser integrated with a tightly coupled on-chip solution-processed graphene saturable-absorber reflector. This enable a high power (8 mW) FCS with over 90 optical modes to be demonstrated over more than 55% of the laser dynamic range, with over three-decade reduction of phase-noise over an additional 15% of this range. Furthermore, stable injection locking is demonstrated, paving the way to impact a number of key technologies and applications, including high-precision tunable broadband spectroscopy, quantum metrology and broadband THz nanoscopy

Presenters and Authors Info

Presenter: Anonymous

Authors: Mezzapesa, Francesco; Garrasi, Katia; Schmidt, Johannes; Salemi, Luca; Li, Lianhe; Davies, Giles; Linfield, Edmund; Carey, Tian; Torrisi, Felice; Ferrari, Andrea; Vitiello, Miriam Serena

Cambridge Graphene Centre, Consiglio Nazionale delle Ricerche-Istituto Nanoscienze, NEST, CNR - Istituto Nanoscienze and Scuola Normale Superiore, University of Leeds