Crystal lasers, often made with rubies, can produce a light strong enough to cut through steel.
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Electric current is typically used to pump laser diodes and semiconductor crystal lasers ( for example germanium)
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In the beginning, IPG made customized glass and crystal lasers, wireless temperature meters for hyperthermy and laser components.
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It is claimed that the first infrared laser with a tunability of more than one octave was a germanium crystal laser.
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:You might also find it described as " 3D crystal laser engraving " .-- Talk 13 : 31, 1 June 2013 ( UTC)
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Liquid crystal lasers use a liquid crystal in the photonic bandgap created by the periodic dielectric structure of the liquid crystal gives a low-threshold high-output device with stable monochromatic emission.
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Then Dr . Paul R . Renne, president of the Berkeley Geochronology Center in California, ran tests with a recently perfected geological dating technology known as argon-argon single crystal laser fusion.
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