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The Influence of Doping on the Performance of Terahertz Quantum-Cascade-Lasers

A. Benz, G. Fasching, A.M. Andrews, K. Unterrainer, T. Roch, W. Schrenk, and G. Strasser

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Abstract

We present the effects of the doping concentration on a set of terahertz quantum-cascade-lasers emitting around 2.75 THz. The threshold current density decreases linearly with the doping. The output power drops monotonically.

© 2007 Optical Society of America

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