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5 March 2021 Anti-Stokes fluorescence cooling of a Yb-doped silica glass preform using a high-power laser
Esmaeil Mobini, Saeid Rostami, Mostafa Peysokhan, Alexander Albrecht, Stefan Kuhn, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Thomas Schreiber, Ramona Eberhardt, Angel S. Flores, Andreas Tünnermann, Mansoor Sheik-Bahae, Arash Mafi
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Proceedings Volume 11702, Photonic Heat Engines: Science and Applications III; 1170208 (2021) https://doi.org/10.1117/12.2579925
Event: SPIE OPTO, 2021, Online Only
Abstract
Anti-Stokes fluorescence cooling of a Yb-doped silica glass optical fiber preform is achieved using a high-power laser in a double-pass configuration. The coherent laser beam illuminates the silica glass preform in the red tail of its absorption spectrum, and the heat is carried out by anti-Stokes fluorescence of the blue-shifted photons. The high-purity Yb-doped silica glass preform has low parasitic absorption and is codoped with modifiers to mitigate the quenching-induced non-radiative decay for sufficiently high concentrations of Yb ions in silica glass. Therefore, sufficiently large laser absorption could be achieved to observe cooling while maintaining a near-unity external quantum efficiency.
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Esmaeil Mobini, Saeid Rostami, Mostafa Peysokhan, Alexander Albrecht, Stefan Kuhn, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Thomas Schreiber, Ramona Eberhardt, Angel S. Flores, Andreas Tünnermann, Mansoor Sheik-Bahae, and Arash Mafi "Anti-Stokes fluorescence cooling of a Yb-doped silica glass preform using a high-power laser", Proc. SPIE 11702, Photonic Heat Engines: Science and Applications III, 1170208 (5 March 2021); https://doi.org/10.1117/12.2579925
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KEYWORDS
Glasses
Silica
Luminescence
High power lasers
Absorption
High power fiber amplifiers
Optical amplifiers
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