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Design of a Si-based Lattice-matched GeSn/SiGeSn Multi-quantum-well Laser

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Journal of Russian Laser Research Aims and scope

Abstract

By calculating the heterojunction band alignment of GeSn/SiGeSn, a Ge0.9Sn0.1/Si0.14Ge0.71Sn0.15 multi-quantum-well laser was designed, where three Ge0.9Sn0.1 layers act as wells separated by three Si0.14Ge0.71Sn0.15 layers as barriers. The maximum TE gain reaches 7000 cm1 at 0.5 eV, and the maximum TM gain reaches 5500 cm1 at 0.52 eV. The modal gain of the Ge0.9Sn0.1/Si0.14Ge0.71Sn0.15 multi-quantum-well laser we proposed and designed can reach 100 cm1 with a current density of 5 kA/cm2. The result indicates that it is possible to obtain a Si-based laser.

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Correspondence to Junqin Zhang.

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Zhang, J., Ma, J. & Yang, Y. Design of a Si-based Lattice-matched GeSn/SiGeSn Multi-quantum-well Laser. J Russ Laser Res 41, 98–103 (2020). https://doi.org/10.1007/s10946-020-09853-1

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  • DOI: https://doi.org/10.1007/s10946-020-09853-1

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