Characteristics of Yb-doped silica fibers containing Y2O3 nanoparticles for optical refrigeration

Jyothis Thomas; Thomas Meyneng; Amirhossein Tehranchi; Patricia Manarazan; Frederic Monet; Jean-Sebastien Boisvert; Steeve Morency; Nicolas Grégoire; Denis Seletskiy; Younès Messaddeq; Raman Kashyap

doi:10.1117/12.2611549

3 March 2022 Characteristics of Yb-doped silica fibers containing Y₂O₃ nanoparticles for optical refrigeration

Jyothis Thomas, Thomas Meyneng, Amirhossein Tehranchi, Patricia Manarazan, Frederic Monet, Jean-Sebastien Boisvert, Steeve Morency, Nicolas Grégoire, Denis Seletskiy, Younès Messaddeq, Raman Kashyap

Author Affiliations +

Proceedings Volume 12018, Photonic Heat Engines: Science and Applications IV; 1201806 (2022) https://doi.org/10.1117/12.2611549
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

The optimization of the fiber geometry, core composition & rare earth ion concentration in optical fibers are of great importance in obtaining high photoluminescence quantum yield (PLQY) for optical refrigeration applications. Presented herein are the important advancements in the development of a Y2O3: Yb (5 molars percent) nanoparticle doped fibers embedded in glass matrix with composition 95SiO_2-5GeO², with an in-depth investigation on structural and optical properties for laser cooling applications. The impurity absorption was minimized by using high-purity precursors to fabricate the fiber using modified chemical vapor deposition method (MCVD). Structural characterizations have evidenced the presence of Y²O₃ nanoparticles ranging from 25 to 50 nm. The optical properties such as transmission, refractive index, photoluminescence (PL) emission and lifetime were studied in detail. Finally, the background absorption as well as temperature change of the fibers using 1030 nm laser are measured using fiber Bragg grating (FBG) sensor.

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Jyothis Thomas, Thomas Meyneng, Amirhossein Tehranchi, Patricia Manarazan, Frederic Monet, Jean-Sebastien Boisvert, Steeve Morency, Nicolas Grégoire, Denis Seletskiy, Younès Messaddeq, and Raman Kashyap "Characteristics of Yb-doped silica fibers containing Y₂O₃ nanoparticles for optical refrigeration", Proc. SPIE 12018, Photonic Heat Engines: Science and Applications IV, 1201806 (3 March 2022); https://doi.org/10.1117/12.2611549

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