QD-lasers up to and beyond 1300 nm

Clear advantages of quantum dot lasers are evident for high power applications for /spl lambda//spl ges/1.1 /spl mu/m range. These diodes are needed as pump sources for rare-earth-doped fiber lasers, which are the compact sources of blue-green light. The required wavelength is however beyond the reach of classical InGaAs/GaAs QW-based lasers. At the same time this wavelength can be easily achieved with InGaAs/GaAs QDs. Furthermore, the reduced facet overheating helps to prevent catastrophical optical damage at high output powers. The author presents a study of an Al-free InGaAs/GaAs QD laser for /spl lambda/=1.1 /spl mu/m grown by MOCVD.