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In 2022, II-VI acquired laser manufacturer Coherent, Inc.. [14] and took the name Coherent Corp. Carl Johnson served as II-VI's first CEO from 1985 to 2007. He stepped down as CEO in 2007 and was named chairman of the board, a position he held until 2014. [15] Johnson was succeeded as CEO by Francis Kramer, who had been president since 1985. [13]
It went public in 1970. Over time, Coherent acquired other laser businesses and expanded to lasers for different industries and applications. From 2004 to 2021, it grew from $400 million to almost $2 billion in revenues, in part through a series of acquisitions. In 2022, II-VI Incorporated acquired Coherent, Inc. and took the name Coherent Corp ...
Among common semiconductors used for infrared detection, only InSb and InAs surpass electron mobility of HgCdTe at room temperature. At 80 K, the electron mobility of Hg 0.8 Cd 0.2 Te can be several hundred thousand cm 2 /(V·s). Electrons also have a long ballistic length at this temperature; their mean free path can be several micrometres.
II-VI may refer to: II-VI Incorporated, a manufacturer of optical materials and semiconductors; II-VI semiconductor compound, a material composed of a metal from ...
Exposing skin to infrared radiation near visible light (IR-A) leads to increased production of free radicals. [41] Short-term exposure can be beneficial (activating protective responses), while prolonged exposure can lead to photoaging. [42] Another important factor is the distance between the worker and the source of radiation.
Infrared vision is the capability of biological or artificial systems to detect infrared radiation. The terms thermal vision and thermal imaging [ 1 ] [ 2 ] are also commonly used in this context since infrared emissions from a body are directly related to their temperature: hotter objects emit more energy in the infrared spectrum than colder ones.
The latest recall in the beauty world just happens to involve one of the biggest at-home trends for skincare junkies and one of the leading brands in the industry.
An image intensifier or image intensifier tube is a vacuum tube device for increasing the intensity of available light in an optical system to allow use under low-light conditions, such as at night, to facilitate visual imaging of low-light processes, such as fluorescence of materials in X-rays or gamma rays (X-ray image intensifier), or for conversion of non-visible light sources, such as ...
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