The linewidth enhancement factor of a quantum-dot laser is observed to increase substantially at high bias currents. This is explained as a consequence of slow carrier relaxation and plasma dependent refractive index.
© 2006 Optical Society of America
Y. Chu, M. G. Thompson, R. V. Penty, I. H. White, S. Melnik, S. P. Hegarty, G. Huyet, F. Hopfer, M. Laemmlin, D. Bimberg, and A. R. Kovsh, "1.3 µm Quantum-Dot Laser Linewidth Rebroadening," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper CThX3.
References are not available for this paper.