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Which well-known manufacturers of laser diodes exist?

The leading manufacturers of industrial laser diodes: Nichia (Japan) – market leader for green and blue laser diodes, highest efficiency and service life; well-known models include the NDG7575 (1 W green, 520 nm) and the NUBM series (blue). Sharp (Japan) – strong second source for visible wavelengths; models such as GH05C01B9G (1 W green). Osram Opto Semiconductors (Germany) – broad portfolio from 405 to 850 nm. Sony – mainly for display and show applications. Ushio – industrial high-power diodes. For red and infrared the choice is wider; for green and blue Nichia and Sharp are the dominant sources.