Excited-State Absorption Spectroscopy of Thulium-Doped Fluoride Crystals for Upconversion Pumping

Lauren Guillemot; Pavel Loiko; Jean-Louis Doualan; Alain Braud; Florent Starecki; Patrice Camy

doi:10.1364/ASSL.2020.ATu2A.3

Laser Congress 2020 (ASSL, LAC)
OSA Technical Digest (Optica Publishing Group, 2020),
paper ATu2A.3
•https://doi.org/10.1364/ASSL.2020.ATu2A.3

Excited-State Absorption Spectroscopy of Thulium-Doped Fluoride Crystals for Upconversion Pumping

Lauren Guillemot, Pavel Loiko, Jean-Louis Doualan, Alain Braud, Florent Starecki, and Patrice Camy

Advanced Solid State Lasers 2020

Washington, D.C. United States
13–16 October 2020
ISBN: 978-1-943580-84-2

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Laser Materials I (Crystals) (ATu2A)

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L. Guillemot, P. Loiko, J. Doualan, A. Braud, F. Starecki, and P. Camy, "Excited-State Absorption Spectroscopy of Thulium-Doped Fluoride Crystals for Upconversion Pumping," in Laser Congress 2020 (ASSL, LAC), P. Schunemann, C. Saraceno, S. Mirov, S. Taccheo, J. Nilsson, A. Petersen, D. Mordaunt, and J. Trbola, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper ATu2A.3.

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Abstract

We report on polarized excited-state absorption (ESA) spectroscopy of thulium-doped fluoride crystals (KY₃F₁₀, LiYF₄, LiLuF₄ and BaY₂Y₈). The ³F₄ → ³F_2,3 and ³F₄→³H₄ ESA channels suitable for upconversion pumping of ~2.3 μm thulium lasers were studied.

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