semiconductor laser diode
81Heinrich Welker — Heinrich Johann Welker (September 9, 1912 in Ingolstadt, Germany ndash; December 25, 1981 in Erlangen, Germany) was a German theoretical and applied physicist who invented the transistron. He did fundamental work in III V compound semiconductors …
82Indirect bandgap — In semiconductor physics, an indirect bandgap is a bandgap in which the minimum energy in the conduction band is shifted by a k vector relative to the valence band. The k vector difference represents a difference in momentum.Semiconductors that… …
83Photonic integrated circuit — A photonic integrated circuit (PIC) or integrated optical circuit is a device that integrates multiple photonic functions and as such is analogous to an Electronic Integrated Circuit. The major difference between the two is that a photonic… …
84Shuji Nakamura — Born 22 May 1954 (1954 05 22) (age 57) Ikata, Ehime, Japan Residence United States …
85Robert J. Lang — Infobox Scientist name = Robert J. Lang image width = 300px caption = Dr. Robert Lang folding an origami American flag, which includes 50 stars and 13 stripes, from a single uncut square. birth date = May 4, 1961 birth place = Dayton, Ohio death… …
86Molecular-beam epitaxy — (MBE), is one of several methods of depositing single crystals. It was invented in the late 1960s at Bell Telephone Laboratories by J. R. Arthur and Alfred Y. Cho.MethodMolecular beam epitaxy takes place in high vacuum or ultra high vacuum (10−8… …
87Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
88Digital holographic microscopy — Contents 1 Working principle 2 Advantages 3 Applications 4 …
89Optical disc drive — A CD/DVD ROM Drive A Blu ray (BD RE DL) writer tray in a Sony Vaio E series laptop …
90List of engineering topics — This page aims to list all topics related to the broad field of engineering. A more compact list can be found at list of basic engineering topics. See the bottom of the page for links to lists for specific engineering disciplines or for… …
