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Why were helium-neon lasers among the first lasers used widely in business?
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Helium-neon lasers were among the first lasers to achieve broad commercial success primarily because they could be adjusted to generate a visible red beam rather than an infrared one. This capability allowed them to be used immediately for practical tasks requiring precise visual guidance, such as alignment, surveying, construction, and irrigation.1
While early lasers were often described as a "solution looking for a problem," the helium-neon laser's ability to project a clear, visible line provided a tangible utility that helped transition laser technology from theoretical research into widespread business and industrial applications.1