Semiconductor lasers III : 16-18 September, 1998, Beijing, China / Qiming Wang, Lawrence J. Davis, Siamak Forouhar, chairs/editors ; sponsored by SPIE--the International Society for Optical Engineering, COS--Chinese Optical Society, COEMA--China Optics & Optoelectronic Manufacturers Association ; cooperating organizations, National Natural Science Foundation of China [and others].