2009
DOI: 10.1364/ol.34.002486
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Enhanced broadband near-infrared emission and energy transfer in Bi-Tm-codoped germanate glasses for broadband optical amplification

Abstract: Bi-Tm-codoped, and Tm-and Bi-singly doped germanate glasses were prepared, and their luminescent properties were investigated. Intense broadband near-IR emission with FWHM of 300 nm was observed in the Bi-Tm codoped glass. The emission intensity of Tm 3+ : 3 H 4 -13 F 4 and 3 F 4 -13 H 5 transitions in the BiTm-codoped glass was highly increased and reduced, respectively. The fluorescence lifetime of Tm 3+ at 1470 nm increased from 204 s to 301 s after codoping. These should be due to the efficient energy tran… Show more

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Cited by 34 publications
(16 citation statements)
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“…But by comparing GMA‐0B‐1T glass and GMA‐1B‐1T glass, the intensity of 1800‐nm emission increases, also meaning the energy transferring from Binm+ to Tm 3+ . However, the emission peaking at 1480 nm is covered and hardly observed in GMA‐1B‐1T glass, which is much opposite from the conclusion taken from the previous work …”
Section: Resultscontrasting
confidence: 97%
“…But by comparing GMA‐0B‐1T glass and GMA‐1B‐1T glass, the intensity of 1800‐nm emission increases, also meaning the energy transferring from Binm+ to Tm 3+ . However, the emission peaking at 1480 nm is covered and hardly observed in GMA‐1B‐1T glass, which is much opposite from the conclusion taken from the previous work …”
Section: Resultscontrasting
confidence: 97%
“…However there are no direct proofs to confirm any of these hypotheses until now. Here we ascribe the origin of the luminescence to "active bismuth," e.g., Bi + [18]. The energy levels of Bi-related centers were proposed based on energy matching conditions.…”
Section: Resultsmentioning
confidence: 99%
“…For the doping, the solutions were added to the polymer before the deposition of the samples. Deposition process of the Bismuth doped ENR layers have been already described in Ref 16…”
Section: Methodsmentioning
confidence: 99%
“…Nowadays, a possibility of enhancing the near‐infrared emission of the Bi doped glasses by co‐doping them with transition metal ions such as Ytterbium (Yb 3+ ),14 Dysprosium (Dy 3+ ),15 Thulium (Tm 3+ ),16 and Nickel17 has appeared. In this article, we are going to report about PL properties of Bi doped Epoxy Novolak Resin (ENR) and co‐doped with Cerium (Ce 3+ ), Dysprosium (Dy 3+ ), and Yttrium (Y 3+ ) ions, as they, according to the published literature might have some co‐activating potential.…”
Section: Introductionmentioning
confidence: 99%