I. Kundu, P. Dean, A. Valavanis, J. Freeman, M. Rosamond, Lianhe H. Li, Yingjun Han, E. Linfield, A. Davies
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Continuous Frequency Tuning of Y-Branched Terahertz Quantum Cascade Lasers with Photonic Lattice
We report electrically-controlled continuous frequency tuning over ∼20 GHz by exploiting the additive Vernier tuning effect in a THz QCL based on a longitudinally-coupled Y-branched waveguide.