Laser Refrigeration of Ytterbium-Doped Sodium-Yttrium-Fluoride Nanowires.
basic_science · Level V
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- Record sourced from PubMed, PMID 27514650.
- Also identified by DOI 10.1002/adma.201600406.
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Abstract
Sodium yttrium fluoride (β-NaYF<sub>4</sub> ) nanowires (NWs) with a hexagonal crystal structure are synthesized using a low-cost hydrothermal process and are shown to undergo laser refrigeration based on an upconversion process leading to anti-Stokes (blueshifted) photoluminescence. Single-beam laser trapping combined with forward light scattering is used to investigate cryophotonic laser refrigeration of individual NWs through analysis of their local Brownian dynamics.