Submitted by SurprisedPotato t3_10utol4 in askscience
abeinszweidrei t1_j7fjtda wrote
Reply to comment by zerpa in Why are green and red laser pointers so cheap and available, but yellow ones not so much? by SurprisedPotato
Good question, I don't know. Sounds like it could work. A quick search only gave me some single wavelength yellow ones though. My guess is that they are just more expensive. You'll need two lasers, and also optics compensated for the chromatic shift and suitably coated. That's straightforward, but probably just makes it too expensive for normal laser pointers. But yeah, i don't see a fundamental reason not to make it like this
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