Polarized spectroscopy of Ho:YAlO3 crystals for 2 µm and 3 µm lasers

Ghassen Zin Elabedine; Pavel Loiko; Simone Normani; Rosa Maria Solé; Alain Braud; Patrice Camy; Elena Dunina; Liudmila Fomicheva; Alexey Kornienko; Weidong Chen; Dunlu Sun; Peixiong Zhang; Xavier Mateos; Uwe Griebner; Valentin Petrov

doi:10.1117/12.3002400

12 March 2024 Polarized spectroscopy of Ho:YAlO₃ crystals for 2 μm and 3 μm lasers

Ghassen Zin Elabedine, Pavel Loiko, Simone Normani, Rosa Maria Solé, Alain Braud, Patrice Camy, Elena Dunina, Liudmila Fomicheva, Alexey Kornienko, Weidong Chen, Dunlu Sun, Peixiong Zhang, Xavier Mateos, Uwe Griebner, Valentin Petrov

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Proceedings Volume 12864, Solid State Lasers XXXIII: Technology and Devices; 128640V (2024) https://doi.org/10.1117/12.3002400
Event: SPIE LASE, 2024, San Francisco, California, United States

Conference Poster

Abstract

We report on polarized spectroscopic properties of Ho³⁺ ions in orthorhombic (sp. gr. Pnma) yttrium orthoaluminate YAlO₃ crystals for laser development at 2 μm and 3 μm. This includes polarized Raman, absorption and luminescence spectra, fluorescence lifetime measurements and Stark energy-level study. The transition intensities for Ho³⁺ ions are calculated using the Judd-Ofelt theory. The peak stimulated-emission cross-sections are 2.01×10^-20 cm² at 1977 nm (⁵ I₇ → ⁵ I₈) and 2.31×10^-20 cm² at 2918 nm (⁵ I₆ →⁵ I₇) for light polarization E || b. For both transitions, pump-induced polarization-switching is expected. The fluorescence lifetimes of the ⁵I₇ and ⁵ I₆ Ho³⁺ manifolds are 7.27 and 0.36 ms, respectively (for 1 at.% Ho³⁺ -doping).

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Ghassen Zin Elabedine, Pavel Loiko, Simone Normani, Rosa Maria Solé, Alain Braud, Patrice Camy, Elena Dunina, Liudmila Fomicheva, Alexey Kornienko, Weidong Chen, Dunlu Sun, Peixiong Zhang, Xavier Mateos, Uwe Griebner, and Valentin Petrov "Polarized spectroscopy of Ho:YAlO₃ crystals for 2 μm and 3 μm lasers", Proc. SPIE 12864, Solid State Lasers XXXIII: Technology and Devices, 128640V (12 March 2024); https://doi.org/10.1117/12.3002400

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