[1] Iga K, Koyama F, Kinoshita S. Surface emitting semiconductor lasers [J]. IEEE J. Quantum Electron, 1988, 24:1845-1855
[2] Soda H, Iga K, Kitahara C et al. GaInAsP/InP surface emitting injection lasers [J]. Japan. J. Appl. Phys, 1979,18:2329-2320
[6] Schubert E F, Tu L W et al. Elimination of heterojunction band discontinuities by modulation doping [J]. Appl.Phys. Lett, 1992, 60:466-468