Temperature dependence of 4.1 μm mid-infrared type II "w" interband cascade lasers

Ikyo, B.A., Marko, I.P., Adams, A.R., Sweeney, S.J. , Canedy, C.L., Vurgaftman, I., Kim, C.S., Kim, M., Bewley, W.W. and Meyer, J.R. (2011) Temperature dependence of 4.1 μm mid-infrared type II "w" interband cascade lasers. Applied Physics Letters, 99(2), 021102. (doi: 10.1063/1.3606533)

Abstract

The thermal properties of 5-stage “W” Interband-Cascade Lasers emitting at 4.1 μm at room temperature (RT) are investigated by measuring the lasing and spontaneous emission properties as a function of temperature and hydrostatic pressure up to 1 GPa. Experiments show that at RT more than 90% of threshold current of these devices is due to non-radiative loss processes. We also find that the threshold current density dependence on temperature can be fitted with a single exponential function over a wide temperature range with a characteristic temperature, T0, of 45 K. The relatively high temperature sensitivity in these devices is attributable to the large non-radiative current contribution coupled with non-pinning of the carrier density above threshold.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Marko, Dr Igor and Sweeney, Professor Stephen
• Authors: Ikyo, B.A., Marko, I.P., Adams, A.R., Sweeney, S.J., Canedy, C.L., Vurgaftman, I., Kim, C.S., Kim, M., Bewley, W.W., and Meyer, J.R.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Letters
• Publisher: American Institute of Physics
• ISSN: 0003-6951
• ISSN (Online): 1077-3118

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