InP-Based Type-II Heterostructure Lasers for 2.5µm Working CW at Room Temperature and Above 24nd IEEE International Semiconductor Laser Conference (ISLC), Palma de Mallorca, Spain(2014) (2014) S. Sprengel, G. Veerabathran, A. Köninger, F. Federer, G. Boehm, M. C. Amann Online Ref