Abstract: The present invention provides a Pulsed Beam Deposition (PBD) architecture that aims effusion cells parallel to the axis of rotation and off-center of an annular-shaped substrate holder. This configuration results in pulsed, single elemental substrate exposure and no co-deposition when multiple sources are open. Migration-enhanced epitaxy (MEE) is achieved automatically with no sequential shuttering. PBD with built-in MEE solves both shutter fatigue and growth-rate limitations of traditional MEE. Some embodiments provide a PBD apparatus comprising a plurality of elemental effusion cells positioned to deposit elemental materials onto a revolving substrate held by a rotatable substrate holder, wherein the rotatable substrate holder and the plurality of elemental effusion cells are configured to limit direct exposure at any point on the substrate to a maximum of one elemental effusion cell at a time.

Abstract: A semiconductor laser with improved device characteristics and novel protection against high power output degradation is disclosed. The laser comprises a plurality of layers deposited on a substrate, including an active layer with neighboring cladding layers, so as to define a waveguide, said waveguide having opposing end surfaces. A single crystal mirror layer is formed directly on at least one of the end surfaces, providing improved device characteristics and a longer life time for high power output applications. The mirror layer has sufficient thickness and is made of a material having a refractive index sufficiently different from that of the active layer to substantially modify the reflectivity of the first end surface. In a preferred embodiment, the laser is an AlGaAs laser designed to operate at 980 nm, and the single crystal mirror layer comprises a large band gap material, such as ZnSe, MgS, or BeTe.

Abstract: A method of manufacturing a tri-plate vacuum-sealed field emission type display facilitates mass production ex-situ. The method is based on a plate including an anode plate, a backing plate including at least one sealed access orifice, and a cathode/substrate plate secured between the anode plate and the backing plate. The cathode/substrate plate is vented in the active area, with a multitude of pass-through apertures, each aperture being conically shaped to optimize uninterrupted travel of damaging gas molecules to a getter located on the opposite side. Before sealing the access orifice in the backing plate, the orifice is used to decontaminate the inside of the display with a cleaning gas and to insert a granule form of getter.

Abstract: An effusion cell assembly includes a self-supporting element disposed within a housing member. The self-supporting element provides efficient heat transfer to a crucible positioned therein and permits operation at relatively lower filament tempertures.