Af. Tsatsul'Nikov et al., Lasing in structures with InAs quantum dots in an (Al,Ga)As matrix grown by submonolayer deposition, J ELEC MAT, 28(5), 1999, pp. 537-541
Structural and optical properties of structures with nanoscale InAs islands
obtained by submonolayer deposition and embedded in an AlxGa1-xAs matrix i
s investigated. Deposition of several planes of InAs insertions results in
formation of arrays of vertically correlated islands. The lateral size of t
he islands in a column is about 10 nm. Lasing via the ground states of the
islands without external optical confinement is demonstrated.