Eales, T. D., Marko, I. P., Ikyo, B. A., Adams, A. R., Arafin, S., Sprengel, S., Amann, M.-C. and Sweeney, S. J. (2017) Wavelength dependence of efficiency limiting mechanisms in Type-I Mid-Infrared GaInAsSb/GaSb lasers. IEEE Journal of Selected Topics in Quantum Electronics, 23(6), 1500909. (doi: 10.1109/JSTQE.2017.2687823)
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Abstract
The efficiency limiting mechanisms in type-I GaInAsSb-based quantum well (QW) lasers, emitting at 2.3, 2.6 and 2.9 μm, are investigated. Temperature characterization techniques and measurements under hydrostatic pressure identify an Auger process as the dominant nonradiative recombination mechanism in these devices. The results are supplemented with hydrostatic pressure measurements from three additional type-I GaInAsSb lasers, extending the wavelength range under investigation from 1.85 to 2.90 μm. Under hydrostatic pressure, contributions from the CHCC and CHSH Auger mechanisms to the threshold current density can be investigated separately. A simple model is used to fit the nonradiative component of the threshold current density, identifying the dominance of the different Auger losses across the wavelength range of operation. The CHCC mechanism is shown to be the dominant nonradiative process at longer wavelengths (> 2 μm). At shorter wavelengths (<; 2 μm), the CHSH mechanism begins to dominate the threshold current, as the bandgap approaches resonance with the spin-orbit split-off band.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Marko, Dr Igor and Sweeney, Professor Stephen |
| Authors: | Eales, T. D., Marko, I. P., Ikyo, B. A., Adams, A. R., Arafin, S., Sprengel, S., Amann, M.-C., and Sweeney, S. J. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | IEEE Journal of Selected Topics in Quantum Electronics |
| Publisher: | Institute of Electrical and Electronics Engineers |
| ISSN: | 1077-260X |
| ISSN (Online): | 1558-4542 |
| Published Online: | 31 March 2017 |
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