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Quantum cascade laser oscillating in circuit-based resonator

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Abstract

We present a microcavity for the Terahertz based on a lumped circuit inductor-capacitor (LC) resonator. The substitution of the capacitor dielectric by a gain medium allows the demonstration of a Terahertz laser with a strongly sub-wavelength electronic resonator. Lasing is observed at 1.5 THz at 4.2 K. The LC resonator allows fabricating microcavities with dimensions arbitrarily smaller than the wavelength.

© 2010 Optical Society of America

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