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3 W Near-Diffraction-Limited Power from High-Index-Contrast Photonic-Crystal Quantum Cascade Lasers

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Abstract

Phase locking, via resonant leaky-wave coupling, of five 8.36 µm-emitting quantum cascade lasers has provided in-phase-mode operation to 3 W with 1.5 x diffraction limit lobewidth and 2.45 W emitted in the main far-field lobe.

© 2014 Optical Society of America

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