Superbroadband near-IR emission from praseodymium-doped bismuth gallate glasses

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Original languageEnglish
Pages (from-to)2958-2960
Journal / PublicationOptics Letters
Issue number15
Publication statusPublished - 1 Aug 2011


Superbroadband near-infrared (NIR) emission covering 1250 to 1680nm wavelength has been obtained in praseodymium (Pr3+) singly doped bismuth gallate glasses. The emission originates from the1G 4 3H5 and 1D2 1G4 transitions at 1330 and 1490nm wavelengths, respectively, and is due to the extremely low phonon energy (∼690cm -1) and the unique ligand field of the glasses. It is shown that the emission line shape can be modified by adjusting the Pr3+ concentration and the energy transfers involved. The results confirm that other than bismuth (Bi), chromium (Cr), nickel (Ni), and other chemical elements, Pr3+ singly doped system is a promising alternative in achieving superbroadband NIR emission. © 2011 Optical Society of America.