Laser Refrigeration of Ytterbium‐Doped Sodium–Yttrium–Fluoride Nanowires
Laser Refrigeration of Ytterbium‐Doped Sodium–Yttrium–Fluoride Nanowires
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DOI：
10.1002/adma.201600406
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发表时间：
2016-10
影响因子：
29.4
通讯作者：
Xuezhe Zhou;Bennett E. Smith;P. Roder;P. Pauzauskie
中科院分区：
文献类型：
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作者：
Xuezhe Zhou;Bennett E. Smith;P. Roder;P. Pauzauskie
采用低成本的水热法合成了六方晶系的氟化钇钠（β-NaYF 4）纳米线，并通过上转换激光制冷产生了反斯托克斯（蓝移）光致发光。采用单光束激光囚禁结合前向光散射的方法，通过分析纳米线的局域布朗动力学，研究了单个纳米线的低温光子激光制冷。
Sodium yttrium fluoride (β-NaYF4 ) 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.