laser emits at wavelength λ
41Optical parametric amplifier — An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process. Contents 1 Optical parametric generation (OPG) 2 Optical parametric amplification… …
42Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… …
43Beam divergence — The beam divergence of an electromagnetic beam is an angular measure of the increase in beam diameter with distance from the optical aperture or antenna aperture from which the electromagnetic beam emerges. The term is relevant only in the far… …
44Terahertz time-domain spectroscopy — In physics, terahertz time domain spectroscopy (THz TDS) is a spectroscopic technique where a special generation and detection scheme is used to probe material properties with short pulses of terahertz radiation. The generation and detection… …
45Electromagnetic radiation — Electromagnetism Electricity · …
46Emission spectrum — The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted by the element s atoms or the compound s molecules when they are returned to a lower energy state. Each element s …
47Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …
48List of Universal Century technology — This is a list of fictional technology from the Universal Century timeline of the Gundam anime metaseries. Real Life History These technologies first debuted in Gundam Century , written by fans at that time, later endorsed by Sunrise and Bandai,… …
49Machine vision glossary — Common definitions related to the machine vision field.Compiled for application on the Society of Manufacturing Engineers interest area.General related fields *Machine vision *Computer vision *Image processing *Signal processing NOTOC 0 9*1394.… …
50Hawking radiation — is a thermal radiation with a black body spectrum predicted to be emitted by black holes due to quantum effects. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also… …
