Asymmetric InP-based structures for high power laser diodes at 1400-1500 nm for pumping optical amplifiers used in communication systems. This project is aimed at obtaining high power, single mode 1400-1500 nm wavelength laser diodes using a novel design of asymmetric InP-based structures. These devices are in great demand for pumping of erbium-doped and Raman amplifiers for powering the next generation of dense wavelength division multiplexing optical networks. The low modal gain (confinement f ....Asymmetric InP-based structures for high power laser diodes at 1400-1500 nm for pumping optical amplifiers used in communication systems. This project is aimed at obtaining high power, single mode 1400-1500 nm wavelength laser diodes using a novel design of asymmetric InP-based structures. These devices are in great demand for pumping of erbium-doped and Raman amplifiers for powering the next generation of dense wavelength division multiplexing optical networks. The low modal gain (confinement factor) of this asymmetric structure is expected to reduce internal losses and hence increase the output power with better thermal dissipation. Single mode could be obtained by careful design in the trade-off between filamentation and threshold current. Ion implantation is also proposed to suppress higher order modes.Read moreRead less
NOVEL REAR-SURFACE DESIGNS FOR HIGH-EFFICIENCY COMMERCIAL SILICON SOLAR CELLS. The aim of this collaboration between the University of New South Wales and BP Solar, both world leaders in high-efficiency commercial photovoltaic technologies, is to develop the rear surface of silicon solar cells to enable commercially competitive photovoltaic modules to exceed 20 percent efficiency. The project will develop new technologies for the rear surface that enable excellent light trapping, low recombinati ....NOVEL REAR-SURFACE DESIGNS FOR HIGH-EFFICIENCY COMMERCIAL SILICON SOLAR CELLS. The aim of this collaboration between the University of New South Wales and BP Solar, both world leaders in high-efficiency commercial photovoltaic technologies, is to develop the rear surface of silicon solar cells to enable commercially competitive photovoltaic modules to exceed 20 percent efficiency. The project will develop new technologies for the rear surface that enable excellent light trapping, low recombination and good electrical interconnection that allow the substantial cost and efficiency benefits promised by the use of silicon wafers approaching 150 microns in thickness.Read moreRead less