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Scientists are creating unusual type of laser from a strange material

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David L. Shenkenberg, [email protected]

Just what the heck is a random laser? Because lasers are supposed to produce coherent, linear beams of light, the notion of randomness in a laser beam seems at first to be an oxymoron. As in an ordinary laser, light in a random laser is amplified by passing through a special material – the “gain medium,” but a random laser lacks one feature that most lasers have – a “microcavity,” or a narrow channel that confines the light into a linear beam. Instead of traveling as a linear beam, the light from a random laser radiates outward. Not only does the laser lack a microcavity, but its gain...Read full article

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    Published: August 2009
    Basic ScienceConsumerlinear beammicrocavityrandom laserResearch & TechnologyTech PulseLasers

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