Esmaeil Mobini,1 Saeid Rostami,1 Mostafa Peysokhan,1 Alexander R. Albrechthttps://orcid.org/0000-0001-7641-9332,1 Stefan Kuhn,2 Sigrun Hein,2 Christian Hupel,2 Johannes Nold,2 Nicoletta Haarlammert,2 Thomas Schreiber,2 Ramona Eberhardt,2 Andreas Tünnermann,2,3 Mansoor Sheik-Bahaehttps://orcid.org/0000-0001-5703-3653,1 Arash Mafi1
1The Univ. of New Mexico (United States) 2Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF (Germany) 3Friedrich-Schiller-Univ. Jena (Germany)
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We report the observation of anti-Stokes fluorescence cooling of Yb-doped silica glass by 0.7 degrees Celsius. We conduct a detailed investigation of the cooling parameters of this glass, including the wavelength dependence of the cooling efficiency as a function of the wavelength and also the parasitic absorption of the pump laser. The measurements are performed on three different glass samples with different compositions and cooling is observed in all samples to varying degrees. The results highlight the possibility of using Yb-doped silica glass for radiation-balancing in fibers. Radiation-Balancing is a viable technique for heat mitigation in lasers and amplifiers.
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Esmaeil Mobini, Saeid Rostami, Mostafa Peysokhan, Alexander R. Albrecht, Stefan Kuhn, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Thomas Schreiber, Ramona Eberhardt, Andreas Tünnermann, Mansoor Sheik-Bahae, Arash Mafi, "Observation of anti-Stokes fluorescence cooling of ytterbium-doped silica glass (Conference Presentation)," Proc. SPIE 11298, Photonic Heat Engines: Science and Applications II, 112980G (9 March 2020); https://doi.org/10.1117/12.2545233