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physics.optics2026
Amplitude- and frequency-modulated combs from an actively locked metasurface external-cavity laser
Marco Raffa, Jordane Bloomfield, Yu Wu +5
Optical frequency combs are key components of several photonics applications including spectroscopy, communications, and ultrafast photonics. A central challenge in frequency-comb…
physics.optics2023★ 6 cited
RF Injection Locking of THz Metasurface Quantum-Cascade VECSEL
Yu Wu, Christopher A. Curwen, Mohammad Shahili +2
RF injection locking and spectral broadening of a terahertz (THz) quantum-cascade vertical-external-cavity surface-emitting laser (QC-VECSEL) is demonstrated. An intra-cryostat VEC…