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Definition of Upconversion
1. Noun. (physics) The process by which two photons combine in a nonlinear medium to produce a higher-energy photon with a frequency that is the sum of those of the two photons ¹
¹ Source: wiktionary.com
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1. Noun. (physics) The process by which two photons combine in a nonlinear medium to produce a higher-energy photon with a frequency that is the sum of those of the two photons ¹
¹ Source: wiktionary.com