Fluoride crystals: materials for near-infrared solid state lasers

Daniela Parisi; Stefano Veronesi; Azzurra Volpi; Mauro Gemmi; Mauro Tonelli; Arlete Cassanho; Hans P. Jenssen

doi:10.1117/12.2020556

9 July 2013 Fluoride crystals: materials for near-infrared solid state lasers

Daniela Parisi, Stefano Veronesi, Azzurra Volpi, Mauro Gemmi, Mauro Tonelli, Arlete Cassanho, Hans P. Jenssen

Proceedings Volume 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers; 878614 (2013) https://doi.org/10.1117/12.2020556
Event: SPIE/SIOM Pacific Rim Laser Damage: Optical Materials for High-Power Lasers, 2013, Shanghai, China

Abstract

In this work we present an overview of the best 2μm laser results obtained in Tm-doped fluoride hosts LiYF₄(YLF), LiLuF₄ (LLF) and BaY₂F₈ (BYF) and we report on the growth, spectroscopy and first laser test emission of a novel mixed material BaYLuF₈ (BYLF), interesting as a variant of BYF material with a partial substitution of Y³⁺ ions by Lu³⁺. The novel host is interesting mainly because indications are that the mixed crystal would be sturdier than BYF. The addition of Lutetium would improve the thermo-mechanical properties going into the direction of high power applications, as suggest from works on YLF and its isomorph LLF. A detailed description of Czochralski growth of fluoride laser materials is provided, focusing on the growth parameters of the novel BYLF:Tm³⁺12% material grown. With regard of spectroscopy analysis, we report on the results obtained with BYLF host. Detailed absorption, fluorescence and lifetime measurements have been performed focusing on the ³H₄ and ³F₄ manifolds, the pumping and upper laser level. Moreover diode pumped CW laser emission at 2 μm has been achieved in BYLF: Tm³⁺12% sample obtaining a slope efficiency of about 28% with respect to the absorbed power.

Citation Download Citation

Daniela Parisi, Stefano Veronesi, Azzurra Volpi, Mauro Gemmi, Mauro Tonelli, Arlete Cassanho, and Hans P. Jenssen "Fluoride crystals: materials for near-infrared solid state lasers", Proc. SPIE 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers, 878614 (9 July 2013); https://doi.org/10.1117/12.2020556

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