Investigating the effect of energy level spacing and inhomogeneous broadening on performance of quantum dash ridge-wavelengths lasers at elevated temperatures

Sebastian W. Schaefer; Ras-Jeevan K. Obhi; Christopher E. Valdivia; Philip J. Poole; Pedro J. Barrios; Jiaren Liu; Zhenguo Lu; Karin Hinzer

doi:10.1117/12.2650505

20 March 2023 Investigating the effect of energy level spacing and inhomogeneous broadening on performance of quantum dash ridge-wavelengths lasers at elevated temperatures

Sebastian W. Schaefer, Ras-Jeevan K. Obhi, Christopher E. Valdivia, Philip J. Poole, Pedro J. Barrios, Jiaren Liu, Zhenguo Lu, Karin Hinzer

Author Affiliations +

Proceedings Volume PC12415, Physics and Simulation of Optoelectronic Devices XXXI; PC1241502 (2023) https://doi.org/10.1117/12.2650505
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Using a model developed in Crosslight PICS3D, we have compared simulated gain and device performance for InAs/InP quantum dash ridge waveguide lasers with experimental data from fabricated devices. We investigated the change in device behaviour as the energy spectrum of the dashes is varied and inhomogeneous broadening is changed to represent a distribution of dash sizes and composition. We observed a distinct asymmetry of the dash layer occupation due to inefficient thermionic emission hindering hole transport across the quantum dash layer stack. We have quantified how this effect can be utilized to achieve higher threshold current temperature stability.

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Sebastian W. Schaefer, Ras-Jeevan K. Obhi, Christopher E. Valdivia, Philip J. Poole, Pedro J. Barrios, Jiaren Liu, Zhenguo Lu, and Karin Hinzer "Investigating the effect of energy level spacing and inhomogeneous broadening on performance of quantum dash ridge-wavelengths lasers at elevated temperatures", Proc. SPIE PC12415, Physics and Simulation of Optoelectronic Devices XXXI, PC1241502 (20 March 2023); https://doi.org/10.1117/12.2650505

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