Military dictionary. 2000.
Heterojunction — A heterojunction is the interface that occurs between two layers or regions of dissimilar crystalline semiconductors. These semiconducting materials have unequal band gaps as opposed to a homojunction. It is often advantageous to engineer the… … Wikipedia
Special reconnaissance — This article is a subset article under Human Intelligence. For a complete hierarchical list of articles, see the intelligence cycle management hierarchy. Special Reconnaissance (SR) is conducted by small units of highly trained military personnel … Wikipedia
Hybrid silicon laser — A hybrid silicon laser is a semiconductor laser fabricated from both silicon and group III V semiconductor materials. The hybrid silicon laser was developed to address the lack of a silicon laser to enable fabrication of low cost, mass producible … Wikipedia
Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… … Wikipedia
Fiber laser — A fiber laser or fibre laser is a laser in which the active gain medium is an optical fiber doped with rare earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, and thulium. They are related to doped fiber amplifiers,… … Wikipedia
Calcium fluoride — Chembox new ImageFileL1 = Calcium fluoride.jpg ImageSizeL1 = 150 px ImageFileR1 = Fluorite unit cell 3D ionic.png ImageSizeR1 = 150 px ImageFile2 = Fluorid vápenatý.png ImageSize2 = IUPACName = OtherNames = Section1 = Chembox Identifiers CASNo =… … Wikipedia
Power scaling — of a laser is increasing its output power without changing the geometry, shape, or principle of operation. Power scalability is considered an important advantage in a laser design.Usually, power scaling requires a more powerful pump source,… … Wikipedia
