Ultrafast carrier dynamics in tunnel-injection quantum-dot lasers

Frank Jahnke; Stephan Michael; Michael Lorke

doi:10.1117/12.2610679

7 March 2022 Ultrafast carrier dynamics in tunnel-injection quantum-dot lasers

Frank Jahnke, Stephan Michael, Michael Lorke

Proceedings Volume PC11999, Ultrafast Phenomena and Nanophotonics XXVI; PC119990N (2022) https://doi.org/10.1117/12.2610679
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Increased modulation speed in quantum-dot lasers is possible by means of a tunnel-injection design. The concept was introduced to improve the dynamical properties of semiconductor lasers by avoiding the problem of hot carrier injection, which increases the gain nonlinearity thereby limiting the modulation capabilities. Cold carriers are efficiently provided via an injector quantum well that is tunnel coupled to excited QD states. We study the ultrafast carrier population dynamics in tunnel-injection lasers by comparing LO-phonon-assisted tunneling processes and Coulomb-scattering-assisted processes.

Conference Presentation

Citation Download Citation

Frank Jahnke, Stephan Michael, and Michael Lorke "Ultrafast carrier dynamics in tunnel-injection quantum-dot lasers", Proc. SPIE PC11999, Ultrafast Phenomena and Nanophotonics XXVI, PC119990N (7 March 2022); https://doi.org/10.1117/12.2610679

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