Terahertz Frequency Combs from Dispersion Compensated Quantum Cascade Ring Lasers
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We report frequency combs formation in THz QCL ring cavities. The double metal waveguide laser is encapsulated in benzocyclobutene (BCB) on which the top contact is deposited. This allows to explore alternative designs such as ultrathin ring cavities and coupled double ring waveguides avoiding issues with the electrical connection of the. Ring laser operating in dense comb regime with spectral bandwidth of ~500 GHz is here reported. In addition to the frequency comb operation sech2-shaped spectra are observed in RF-injected ring lasers and dispersion compensated double ring cavities, hinting at the existence of soliton regimes in the QCL. Show more
Book titleLaser Resonators, Microresonators, and Beam Control XXIV
Journal / seriesProceedings of SPIE
Pages / Article No.
Organisational unit03759 - Faist, Jérôme / Faist, Jérôme
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