Department of Electronic Engineering;
Optoelectronics Engineering Research Center;
Xiamen University;
Xiamen;
Fujian 361005;
China;
Department of Electronic Engineering;
East China Normal University;
Shanghai 200241;
China;
Suzhou Institute of Nano-tech and Nano-bionics;
Chinese Academy of Sciences;
Suzhou;
Jiangsu 215123;
China;
School of Solid State Physics;
Technical University of Berlin;
Berlin 10623;
Germany;
Department of Photonics and Institute of Electro-optical Engineering;
Taiwan Chiao Tung University;
GaN; InGaN; quantum dot; vertical-cavity surface-emitting laser; wide-gap semiconductor;