Upconversion?! Making doped Yttrium oxide
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Turning IR light into visible light(maybe??) Patreon: https://www.patreon.com/ExplosionsandFireBlueSky: https://bsky.app/profile/explosionsandfire.bsky.socia...

Dr Thomas de Prinse makes yttrium oxide doped with erbium and ytterbium.

Upconversion: Material absorbs two infrared photons, emits one visible photon.