keyestothefuture Posted June 3, 2017 Share Posted June 3, 2017 Photon upconversion is a process by which a substance absorbs two lower eneegry photons and then emits one higher energy photon. This can be used to convert infrared light into visible light. Would it be possible to make panels that passively convert infrared into visible light, and if so which would be the best ions to use? I assume I would need a setup that goes something like: Visible light filter, ions in solution, infrared filter. Thoughts? Link to comment Share on other sites More sharing options...
swansont Posted June 3, 2017 Share Posted June 3, 2017 You need a nonlinear substance, and as the process is really inefficient, it's almost negligible at low intensities. You need the light to be phase-matched as well, AFAIK. Probably not going to happen much with random light sources. I've only heard of this happening in nonlinear crystals. No idea what ions would work. 1 Link to comment Share on other sites More sharing options...
keyestothefuture Posted June 4, 2017 Author Share Posted June 4, 2017 That's a shame. Nonetheless, thank you for an informative reply. Link to comment Share on other sites More sharing options...
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