supported by the National Natural Science Foundation of China(Nos.61274044 and61020106007);the National Basic Research Program of China(No.2010CB327600);the Natural Science Foundational Science and Technology Cooperation Projects(No.2011RR000100);the 111 Project of China(No.B07005);the Fundamental Research Funds for the Central University(No.2013RC1205);the Specialized Research Fund for the Doctoral Program of Higher Education(No.20130005130001)
We fabricate a GaAs-based InGaAs/InGaAsP multiple quantum wells (MQWs) laser at 1.55 pm. Using two-step growth method and thermal cyclic annealing, a thin low-temperature InP layer and a thick InP buffer layer are g...