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dispersion engineering 1frequency combs 1metasurfaces 1mode locking 1terahertz lasers 1

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1 paper

physics.optics2026

Amplitude- and frequency-modulated combs from an actively locked metasurface external-cavity laser

Marco Raffa, Jordane Bloomfield, Yu Wu +5

The paper demonstrates a THz metasurface VECSEL that can be actively switched between amplitude-modulated (mode-locked) pulses and frequency-modulated quantum-walk comb states usin…