LD01–Multimode Dynamics and Frequency Comb Generation in Quantum Cascade Lasers

In this talk I will discuss how resonant light-matter interaction in the gain medium of quantum cascade lasers gives rise to a rich nonlinear multimode dynamics and a variety of phase-locked multimode regimes, most notably optical frequency combs with separation between the comb lines changing from one to many dozen round-trip frequencies. I will review recent progress in understanding why frequency comb formation seems to be so ubiquitous in QCLs.

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