Zubov, F. I.3; Zhukov, A. E.3; Shernyakov, Yu M.3; Maximov, M. V.3; Kryzhanovskaya, N. V.3; Yvind, Kresten1; Semenova, Elizaveta1; Asryan, L. V.4
1 Department of Photonics Engineering, Technical University of Denmark2 Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark3 St. Petersburg Academic University4 Virginia Polytechnic Institute and State University
Current-voltage and light-current characteristics of quantum-well lasers have been studied at high drive currents. The introduction of asymmetric barrier layers adjacent to the active region caused a significant suppression of the nonlinearity in the light-current characteristic and an increase in the external differential efficiency. As a result, the maximum wallplug efficiency increased by 9%, while the output optical power increased by 29%.
Technical Physics Letters, 2015, Vol 41, Issue 5, p. 439-442