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This Is Your Garden-Variety Laser

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Next time you go shopping for a lasing medium, forget about rubies or sapphires or gases. Just go to the local supermarket and pick up some carrots, potatoes or peppers. Researchers at Iwate University are studying the use of vegetable cells as resonating chambers to make lasers. Scientist Hiroshi Taniguchi slices his veggies, dips them in rhodamine 6-G fluorescent dye and then zaps them with a frequency-doubled Nd:YAG laser, causing the vegetable cells to glow. He believes that this glow is an effect known as multiple light scattering -- alias a random laser. Taniguchi explained...Read full article

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    Published: December 1999
    Research & TechnologyTech PulseLasers

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