Khosh Abady K, Dankhar D, Krishnamoorthi A, Rentzepis PM. Enhancing the upconversion efficiency of NaYF
4:Yb,Er microparticles for infrared vision applications.
Sci Rep 2023;
13:8408. [PMID:
37225762 DOI:
10.1038/s41598-023-35164-x]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/13/2023] [Indexed: 05/26/2023] Open
Abstract
In this study, (NaYF4:Yb,Er) microparticles dispersed in water and ethanol, were used to generate 540 nm visible light from 980 nm infrared light by means of a nonlinear stepwise two-photon process. IR-reflecting mirrors placed on four sides of the cuvette that contained the microparticles increased the intensity of the upconverted 540 nm light by a factor of three. We also designed and constructed microparticle-coated lenses that can be used as eyeglasses, making it possible to see rather intense infrared light images that are converted to visible.
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