In the article the spectroscopic properties of Yb³⁺/Ho³⁺ codoped tellurite glass has been investigated. Upconversion luminescence at the wavelengths of 545 nm (⁵S₂ (⁵F₄) → ⁵I₈) and 654 nm (⁵F₅ → ⁵I₈) in holmium ion was obtained as a result of energy transfer between Yb³⁺ and Ho³⁺ ions. Elaborated tellurite glass characterized by highest intensity of upconversion luminescence (0.5mol% Yb₂O₃/0.1mol% Ho₂O₃) was used as core of double-clad optical fiber. The amplified spontaneous emission in the fabricated optical fiber resulting from the optical transition in the structure of holmium was observed. The intensity of the emission band at the wavelength of 545 nm (⁵S₂ (⁵F₄)→ ⁵I₈) of the fabricated optical fiber was several times smaller than the intensity of the emission band at 657 nm (⁵F₅→ ⁵I₈).

Date Published: 11 January 2013
PDF: 6 pages
Proc. SPIE 8698, Optical Fibers and Their Applications 2012, 869802 (11 January 2013);

Published in SPIE Proceedings Vol. 8698:
Optical Fibers and Their Applications 2012
Ryszard S. Romaniuk; Waldemar Wojcik, Editor(s)