Ultraviolet lasing from optically pumped BeMgZnSe quantum-well laser structures

We achieved lasing of an optically pumped ultraviolet BeMgZnSe-based quantum-well laser grown closely lattice matched to a GaP substrate. A laser emission wavelength of 373 nm at 13 K was observed. The threshold excitation power density was 0.415 MW/cm(2) at 13 K. In addition, we have demonstrated lasing up to 130 K. This indicates that the BeMgZnSe compound is promising as a new candidate for ultraviolet (UV) laser diodes, which possess potential application for UV optoelectronic integrated circuits UV-OEICs on silicon substrates. (C) 2005 American Institute of Physics.