Anti-Stokes photoluminescence from LiY1-xYbxF4 nanocrystals

Arjun Senthil; Shruti I. Gharde; Mark V. Reymatias; Ciara Murphy; Alexander Neumann; Nathan J. Withers; Gennady A. Smolyakov; Sergei A. Ivanov; Dale L. Huber; Marek Osiński

doi:10.1117/12.2615076

3 March 2022 Anti-Stokes photoluminescence from LiY_1-xYb_xF₄ nanocrystals

Arjun Senthil, Shruti I. Gharde, Mark V. Reymatias, Ciara Murphy, Alexander Neumann, Nathan J. Withers, Gennady A. Smolyakov, Sergei A. Ivanov, Dale L. Huber, Marek Osiński

Author Affiliations +

Proceedings Volume 12018, Photonic Heat Engines: Science and Applications IV; 1201807 (2022) https://doi.org/10.1117/12.2615076
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We have successfully synthesized lithium yttrium fluoride (YLF) nanocrystals doped with ytterbium. The Yb content was varied between 1% and 10%. The nanocrystals emit in near-infrared, with the emission spectrum extending from 960 nm to 1060 nm when excited with the 900 nm light. Strong anti-Stokes photoluminescence was observed when using excitation wavelengths ranging from 1010 nm to 1020 nm. The temperature-dependence of the anti-Stokes photoluminescence was measured over the range from 10 °C till 70 °C. These nanocrystals have a high potential to be used in optical cooling applications.

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Arjun Senthil, Shruti I. Gharde, Mark V. Reymatias, Ciara Murphy, Alexander Neumann, Nathan J. Withers, Gennady A. Smolyakov, Sergei A. Ivanov, Dale L. Huber, and Marek Osiński "Anti-Stokes photoluminescence from LiY_1-xYb_xF₄ nanocrystals", Proc. SPIE 12018, Photonic Heat Engines: Science and Applications IV, 1201807 (3 March 2022); https://doi.org/10.1117/12.2615076

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