TY - JOUR AU - T Gfroerer AU - Eric Cornell AU - M Wanlass C2 - Applied Physics Letters DA - 1998-01-01 00:01:00 LA - en M1 - 84 PB - Applied Physics Letters PY - 1998 TI - Efficient directional spontaneous emission from an InGaAs/InP heterostructure with an integral parabolic reflector ER -