White light and three-color (RGB) generation by upconversion in fluorogermanate glass for solid state three-dimensional displays

Artur da S. Gouveia-Neto; Luciano A. Bueno; Raphael F. do Nascimento; Elias A. da Silva; Valberes B. do Nascimento; Ernande B. Costa

doi:10.1117/12.759680

5 February 2008 White light and three color (RGB) generation by upconversion in fluorogermanate glass for solid-state three-dimensional displays

Artur da S. Gouveia-Neto, Luciano A. Bueno, Raphael F. do Nascimento, Elias A. da Silva, Valberes B. do Nascimento, Ernande B. Costa

Author Affiliations +

Proceedings Volume 6890, Optical Components and Materials V; 68900L (2008) https://doi.org/10.1117/12.759680
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

White light was produced exploiting additive synthesis of red, green, and blue(RGB) fluorescence generated through frequency upconversion in fluorogermanate glass samples co-doped with Ho³⁺, Tm³⁺ and Yb³⁺, and excited by a single source of near-infrared radiation. The blue(475 nm), green(540 nm), and red(650 nm), upconversion luminescence signals were, respectively, assigned to thulium(¹G₄ - ³H₆), and holmium(⁵S₂;⁵F₄) → ⁵I₈, ⁵F₅ → ⁵I₈) ions, both excited via successive energy-transfers from ytterbium ions. The Tm³⁺, Ho³⁺, and Yb³⁺ concentrations in the glass host were adjusted yielding the emission of a wide color gamut in the visible spectrum, and the production of white light using a single infrared source of excitation at 975 nm.

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Artur da S. Gouveia-Neto, Luciano A. Bueno, Raphael F. do Nascimento, Elias A. da Silva, Valberes B. do Nascimento, and Ernande B. Costa "White light and three color (RGB) generation by upconversion in fluorogermanate glass for solid-state three-dimensional displays", Proc. SPIE 6890, Optical Components and Materials V, 68900L (5 February 2008); https://doi.org/10.1117/12.759680

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