Abstract:
An electron beam pumped laser wherein the radiating crystal comprises a semiconductor wafer and a mosaic array of radiating elements. Each radiating element in the array emits radiation in a direction coinciding with the axis of the pumping electron beam. Stimulated emission transverse to the pumping electron direction is suppressed by dimensioning each radiating element to prevent gain in the transverse direction. The mosaic of radiating elements may be formed by etching or cutting slots in a semiconductor slice or by direct growth on the semiconductor slice.
Abstract:
Methods of making charge-coupled devices are disclosed, which include deposition of a thin, highly insulating coating of an oxide or nitride of a metal or semi-metal on a patterned first metal electrode layer. The insulating layer is plasma deposited, and a second metal electrode layer is then deposited and patterned. In the illustrated embodiment, the first metal layer is patterned in the same reactor in which the insulating coating is applied, eliminating handling of the device immediately prior to the critical step of deposition of the thin insulating coating.
Abstract:
An improved method of forming interconnections on a semiconductor slice in which a barrier metal of TI:W or Ta is deposited followed by deposit of a conducting layer and then a masking layer of Ta after which the masking layer is patterned with photo-resist and plasma etched whereupon the conducting layer is sputter etched with the barrier layer then being removed to provide an interconnecting lead with sloping sides over which insulation and a second level of metallization may be applied without danger of problems at crossovers.