摘要:
A semiconductor master oscillator generates light which seeds a pair of semiconductor power amplifiers which straddle the oscillator. The power amplifiers have slightly misaligned mirror facets which induce substantial resonator losses in the amplifiers and as a result, the amplifier gain is very high and the modulating speed of the oscillator is also very high.
摘要:
An optical amplifier is provided through which an incoming optical signal passes before entering an optical-to-electric transducer. The level of the optical signal output by the optical amplifier is controlled by a controller based on the electrical signal output by the transducer.
摘要:
A Femto Diode responsive to light frequencies, is described. Quantum principles are utilized. The Femto Diode comprises a submicron metal cylinder with an assymetric metal-insulator-metal tunnel junction at one end and a reflecting potential step at the other end. A light photon having a quanta of energy is absorbed by an electron in the cylinder producing an energetic electron. The cylinder acts as a potential well for the energetic electron, which travels back and forth in its own conduction band without loss of energy until it passes through the junction. The kinetic energy of the energetic electron is converted to electric energy at a greater voltage on the other side of the junction. The energy conversion is reversible.The Femto Diode may be used in light to electric power conversion, a laser which converts electric power to light power, 2D and 3D displays, high speed computers, communications and other devices.
摘要:
An SI.sub.1 I.sub.2 M (semiconductor-insulator.sub.1 -insulator.sub.2 -metal) memory structure, containing an impurity such as tungsten concentrated in a region including the interface ("I.sub.1 I.sub.2 ") region between the I.sub.1 and I.sub.2 region, is fabricated by depositing an oxide of the impurity, such as tungsten trioxide, on the then exposed, I.sub.1 layer prior to fabricating the I.sub.2 layer. The oxide of the impurity, such as tungsten trioxide, can be advantageously deposited by means of reactive evaporation.
摘要:
Light-emitting semiconductor devices consist of a crystal having a Ge concentration of less than 1 ppm and a p-n junction and the method of manufacturing the same. The light-emitting semiconductor device has emission peaks at 1.57 eV in a visible band and can be manufactured inexpensively compared to the conventional light-emitting semiconductor devices.
摘要:
A photodetector for radiation in the 1.0 to 2.5 micrometer region is provided; the photodetector comprising a hybrid material photodiode including a photon absorption material and an avalanche multiplying junction.
摘要:
An SI.sub.1 I.sub.2 M (semiconductor-insulator.sub.1 insulator.sub.2 -metal) memory structure is characterized by the presence of an impurity, such as tungsten, concentrated in a region including the interface ("I.sub.1 I.sub.2 ") between the I.sub.1 and I.sub.2 layers. This metallic impurity provides a well-defined I.sub.1 I.sub.2 interface region, including a potential minimum ("well"), such that the I.sub.1 I.sub.2 interface can be filled with electronic charge carriers (electrons or holes) which have been transported from the semiconductor under the influence of electric fields applied across the structure. The presence versus absence of captured electronic charge carriers at the I.sub.1 I.sub.2 interface can be used as a memory indicator.
摘要:
A controllable semiconductor rectifier device of the type having a monocrystalline semiconductor body having four layer-type zones of alternatingly opposite conductivity types with a portion of the one inner zone which serves as the base zone, and which portion is to support a control electrode, extending to the same major surface of the semiconductor body as the adjacent outer zone which serves as the emitter zone. A respective load current electrode ohmically contacts each of the two outer zones of the semiconductor body and the control electrode ohmically contacts the portion of the base zone which extends to the major surface. The emitter zone has a first section which is recessed from the major surface of the semiconductor body and extends to a first depth below the major surface of the semiconductor body and a second section, which is disposed at the edge of the first section at the major surface and extends to a second depth from the major surface of the semiconductor body, which second depth is less than the first depth. The respective load current electrode only contacts the first section of the emitter zone. The pn-junction which is formed by the edge section of the emitter zone and the base zone has a major portion lying in a plane substantially parallel to the major surface of the semiconductor body.
摘要:
Electroluminescent semiconductor device with brightness control comprising an electroluminescent diode and three transistor regions one of which is made from a material having a forbidden band distance which is smaller than the energy of the radiation emitted by the diode, and one region separates the diode optically from a photoconductive region which is destined to receive radiation other than that of the diode.