Phys.org June 20, 2024 On-chip frequency combs have relied predominantly on single-ring resonators. A team of researchers in the US (University of Maryland, University of Illinois, Northeastern University) experimentally demonstrated the generation of topological frequency combs, in a two-dimensional lattice of hundreds of ring resonators that hosts fabrication-robust topological edge states with linear dispersion. By pumping these edge states, they demonstrated the generation of a nested frequency comb that showed oscillation of multiple edge state resonances across ≈40 longitudinal modes and was spatially confined at the lattice edge. According to the researchers their results provide an opportunity to explore the […]
Tag Archives: Optical frequency combs
Brighter comb lasers on a chip mean new applications
Phys.org August 29, 2023 While conventional optical frequency combs are generated using mode-locked lasers that tend to be constrained to high-end scientific laboratories, there has been recent work to develop optical frequency combs using compact, chip-scale microresonators based on dissipative Kerr solitons (DKSs) which consume very little energy, they also do not produce enough output power to be useful. A team of researchers in the US (NIST, University of Maryland) harnessed the newly proposed Kerr-induced synchronization of Kerr solitons to an external stable laser reference to produce optical frequency combs with substantial increase of power on the other side of […]