title: Designer emission spectra through tailored energy transfer in nanoparticle-doped silica preforms.
abstract: This Letter provides a qualitative proof of concept for purposefully tailoring the emission spectrum of glass by spatially localizing dissimilar dopants to control the degree of energy transfer. More specifically, modified-chemical-vapor-deposition-derived silica preforms were solution doped with either a solution of individually Eu(3+)- or Tb(3+)-doped nanoparticles or a solution of Eu(3+)/Tb(3+)-codoped nanoparticles. The preform prepared using the codoped nanoparticles exhibited energy transfer from the Tb(3+) to the Eu(3+) ions, whereas the preform containing individually doped nanoparticles yielded only discretely Tb(3+) or Eu(3+) emissions. The extension of this work to broadband amplifiers and lasers is discussed.
authors: Charles H. Townes Optical Science and Engineering Laboratories, Center for Optical Materials Science and Engineering Technologies (COMSET) and the School of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, USA.
authors: Courtney
authors: C
authors: Kucera
authors: Baris
authors: B
authors: Kokuoz
authors: Dale
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authors: Edmondson
authors: David
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authors: Griese
authors: Michael
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authors: Miller
authors: Andrew
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authors: James
authors: William
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authors: Baker
authors: John
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authors: Ballato