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arXiv · 2310.10167

Phosphides-based terahertz quantum-cascade laser

D. V. Ushakov·A. A. Afonenko·R. A. Khabibullin·M. A. Fadeev·A. A. Dubinov
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Abstract

Due to their high optical phonon energies GaInP/AlGaInP heterostructures are a promising active medium to solve the problem of creating compact semiconductor sources with an operating frequency range of 5.5-7 THz. In this work, the temperature dependences of gain and absorption at 6.8 THz have been calculated for a GaInP/AlGaInP-based quantum-cascade laser (QCL) with two quantum wells in the cascade and a metal-metal waveguide. We propose a laser structure that provides a mode gain of over 90 cm-1 with a maximum operating temperature of 104 K. The results of this study open the way to the development of a QCL for operation in a significant part of the GaAs phonon absorption band region, which is inaccessible for existing QCLs.

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D. V. Ushakov, A. A. Afonenko, R. A. Khabibullin, M. A. Fadeev, A. A. Dubinov. 2023-10-16. Phosphides-based terahertz quantum-cascade laser. https://arxiv.org/abs/2310.10167

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