Aa. Erchak et al., Enhanced coupling to vertical radiation using a two-dimensional photonic crystal in a semiconductor light-emitting diode, APPL PHYS L, 78(5), 2001, pp. 563-565
Enhanced coupling to vertical radiation is obtained from a light-emitting d
iode using a two-dimensional photonic crystal that lies entirely inside the
upper cladding layer of an asymmetric quantum well structure. A sixfold en
hancement in light extraction in the vertical direction is obtained without
the photonic crystal penetrating the active material. The photonic crystal
is also used to couple pump light at normal incidence into the structure,
providing strong optical excitation. (C) 2001 American Institute of Physics
.