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Near-IR-to-visible emission in ytterbium-doped silica fiber at in-core 488-nm pumping

✍ Scribed by A.V. Kir'yanov; Yu.O. Barmenkov; F. Mendoza-Santoyo; J.L. Cruz; M.V. Andres

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 262 KB
Volume: 5
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200810071

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✦ Synopsis

We report near-IR-to-visible broadband emission in Ytterbium-doped silicate fiber (YF) at 488-nm in-core excitation. This emission is revealed to originate from Yb 3+ -Yb 3+ pair clusters (900 -1200-nm band), whose presence is proved by a separate study of cooperative processes in the fiber, and Yb 2+ phototropic centers (600 -900-nm band) provisionally accepted to be present in the YF. 1 cm 5 cm 10 cm 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 0.5 Emission spectral density, a.u.

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Reversible photo-darkening and resonant photobleaching of Ytterbium-doped silica fiber at in-core 977-nm and 543-nm irradiation

✍ A.D. Guzman Chávez; A.V. Kir'yanov; Yu.O. Barmenkov; N.N. Il'ichev 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 415 KB

We report experimental results showing novel features in photo-darkening and photo-bleaching of a heavily-doped Ytterbium silica fiber exposed to in-core 977-nm and 543-nm irradiation. It is shown that pumping of the fiber at the resonant 977-nm wavelength leads to an increase of absorption in the s