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Japanese researchers create first green diode lasers

Posted on Sunday, July 26 2009 @ 21:08:04 CEST by

ARS Technica reports Japanese researchers have developed the first true green laser diode:
Ever wonder why projector systems and televisions doesn't use laser illumination? It isn't for safety reasons, and it isn't for efficiency reasons—laser diodes have efficiencies ranging from 30 to 50 percent. No, the problem is green light. We have red laser diodes, and blue laser diodes turned up nearly 15 years ago. But green—where the heck is the green laser diode?

A group of Japanese researchers have answered that question: in our lab. Yes, they have the first "true green" laser diode. It doesn't work that well yet but, based on past history, expect rapid progress from here and commercial laser diodes before the end of next year.



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