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Killerhurtz · 3183 days ago · link · · parent · post: Researchers demonstrate the world's first white lasers
So it's a density matter. Got it. Because from what I got from the article, it sounded like it was pretty much a single-element three color polychromatic laser. Though that's fair enough - it is true that even if my above statement is true, it is still one third of the controllers at least and that does makes things cheaper. Thanks!