White upconversion luminescence in Tm3+/Ho3+/Yb 3+ triply doped K+-Na+ ion-exchanged aluminum germanate glass channel waveguide

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)590-595
Journal / PublicationOptical Materials
Issue number3
Publication statusPublished - Jan 2013


Rare-earth ions doped K+-Na+ ion-exchanged aluminum germanate (NMAG) glass channel waveguides have been designed and fabricated. Under 980 nm laser pumping, an intense upconversion white light transmission trace was observed in Tm3+/Ho3+/Yb3+ triply doped NMAG glass channel waveguide and a high-brightness light spot was achieved from the output end of the fiber connected to the waveguide channel. The fluorescent colors were diverse and located within or near the white region in CIE chromaticity diagram under various pumping powers. These admirable results indicate that Tm3+/Ho3+/Yb3+ triply doped NMAG channel waveguide is a promising light source for medical and high-precision processing illumination. © 2012 Elsevier B.V. All rights reserved.

Research Area(s)

  • Channel waveguide, Rare-earth doping, Upconversion amplified spontaneous emission