A. Polimeni et al., OPTICAL-PROPERTIES AND DEVICE APPLICATIONS OF (INGA)AS SELF-ASSEMBLEDQUANTUM DOTS GROWN ON (311)B GAAS SUBSTRATES, Applied physics letters, 73(10), 1998, pp. 1415-1417
We have studied the optical properties of (InGa)As self-assembled quan
tum dots grown on (311)B-oriented GaAs substrates. The luminescence li
newidth is considerably narrower than that of similar samples grown on
(100). The difference is explained in terms of the in-plane coupling
of dots which is more significant in (311)B. In order to assess the de
vice potential of (311)B (InGa)As dots, we have studied the properties
of edge emitting lasers by extending the well-known technology for (1
00) to the (311)B devices. (C) 1998 American Institute of Physics. [S0
003-6951(98)02136-6].