Laser refrigeration by an Ytterbium-doped NaYF4 microspinner

Daniel Jaque; Patricia Haro-González

doi:10.1117/12.2607850

9 March 2022 Laser refrigeration by an Ytterbium-doped NaYF₄microspinner

Proceedings Volume PC12018, Photonic Heat Engines: Science and Applications IV; PC120180A (2022) https://doi.org/10.1117/12.2607850
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

In this work we demonstrate laser cooling in liquids on a micrometric scale by using colloidal microparticles doped with ytterbium ions. These microparticles behave as cooling elements thanks to their anti-stokes luminescence. The novel point of our work is that laser radiation produces laser refrigeration and linear and angular transfer of momentum that allows cooling during remote particle manipulation and rotation. This dual function of laser radiation opens the door to new applications based on the use of portable micro-refrigerants. In addition, we demonstrate for the first time how analyzing rotation dynamics is a new and simpler way to determine, in real time, the magnitude of cooling. In other words, we show how laser light can heat, cool, move and rotate our particles simultaneously. All this without requiring complicated experimental systems.

Conference Presentation

Citation Download Citation

Daniel Jaque and Patricia Haro-González "Laser refrigeration by an Ytterbium-doped NaYF₄microspinner", Proc. SPIE PC12018, Photonic Heat Engines: Science and Applications IV, PC120180A (9 March 2022); https://doi.org/10.1117/12.2607850

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