If the optical phase is large enough, the structures produce several optical domains and even coupled optical cavities. Luminescence mapping of individual ZnSe:Mn nanowires show that different emission lines, different modes occur only at some positions of the wire. Also, this kind of structure displays different luminescence behaviours and spectral distribution under CW and nanosecond pulse laser excitation.

The wires and belts also exhibit different behaviours representative of multi-QDs and multi-QWs, respectively, to show different optical or electronic coherence in the confined space, and confine spatially some of the excitations.

This kind of microstructure may be considered to be a natural superlattice structure by simple growth, much cheaper than the current MBE technique, and with sharper boundaries.

These micro-nanostructures may find applications in new light sources, nonlinear optical devices, waveguides, and for studying quantum electrodynamics in microcavities, interactions between excitons and other excitations, excitonic BECs and quantum entanglement.

A full description of the work can be found in the journal Nanotechnology.