Gain competition in multicolor quantum cascade lasers Conference Paper uri icon


  • We investigated dual-color mid-infrared quantum cascade lasers. We found that due to gain competition mid-infrared modes tend to start lasing in higher order lateral modes. The mid-infrared mode with the lower threshold current reduces population inversion for the second laser with the higher threshold current due to stimulated emission. A theoretical model describing this effect was developed, which is important for future device optimization. ©2009 Optical Society of America.

published proceedings

  • Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010

author list (cited authors)

  • Pflügl, C., Geiser, M., Belyanin, A., Wang, Q. J., Yu, N., Edamura, T., ... Capasso, F

complete list of authors

  • Pflügl, C||Geiser, M||Belyanin, A||Wang, QJ||Yu, N||Edamura, T||Yamanishi, M||Kan, H||Fischer, M||Wittmann, A||Faist, J||Capasso, F

publication date

  • January 1, 2010 11:11 AM