MACKENZIE, R., LIM, J. J., BULL, S., CHAO, S., SUJECKI, S., SADEGHI, M., WANG, S. M., LARSSON, A., MELANEN, P., SIPILA, P., UUSIMAA, P. and LARKINS, E. C., 2007. Measurement of Optical Gain, Effective Group Index and Linewidth Enhancement Factor in 1.3um Dilute Nitride Double-Quantum-Well Lasers In: IOP/SIOE GaInNAs One Day Meeting, Cardiff, April 2nd 2007..