Abstract
In article number 2000575, Miriam S. Vitiello and co-workers report on an integrated architecture for the generation of high power terahertz (THz) frequency combs (FCs) comprising an ultrafast THz polaritonic reflector, exploiting intersubband cavity polaritons, and a broad bandwidth heterogeneous THz quantum cascade lasers (QCL). It is shown that the polaritonic reflector induces spectral reshaping of the QCL emission and stable FC operation over 38% of the laser operational range.
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