THz Optical Solitons in Planarized Quantum Cascade Double Ring Lasers

Paolo Micheletti,Urban Senica,Andres Forrer,Sara Cibella,Guido Torrioli, Martin Frankié,Jérôme Faist, Mattias Beckl,Giacomo Scalari

2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)（2023）

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摘要

Quantum Cascade Lasers (QCL) based on cicular cavities are rapidly progressing as possible sources pf optical solitons [1], [2]. We report soliton formation in dispersion compensated THz ring QCLs [1]. The laser cavity consists of two concentric double metal ring waveguides, designed to support a symmetric and anti-symmetric super-mode where the global GVD is respectively enhanced or decreased [3](Fig. 1 a-b). The two super-modes feature different overlap factors, therefore the laser naturally selects the anti-symmetric super-mode which exhibits negative GVD.

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关键词

anti-symmetric super-mode,cicular cavities,concentric double metal ring waveguides,Fig. 1 a-b,laser cavity,planarized quantum Cascade double ring,possible sources pf optical solitons,QCL,Quantum Cascade Lasers,ring QCLs,soliton formation,super-modes,symmetric mode

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