Kmnf 3 :Yb 3+ ,er 3+ core-active-shell nanoparticles with broadband down-shifting luminescence at 1.5 µm for polymer-based waveguide amplifiers

Yongling Zhang, Peng Lv, Dongxia Wang, Zhengkun Qin, Fei Wang, Daming Zhang, Dan Zhao, Guanshi Qin, Weiping Qin

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

In this study, we prepared cubic-phase oleic-acid-coated KMnF 3 : Yb 3+ ,Er 3+ nanoparticles (NPs) and NaYF 4 :Yb 3+ ,Er 3+ NPs, which were about 23 nm. From the down-shifting emissions spectra of the two NPs obtained by 980 nm excitation, we observed the fact that the KMnF 3 : 18%Yb 3+ ,1%Er 3+ NPs were a luminescent material with a broadband near-infrared emission of 1.5 µm, and full-width at half-maximum (FWHM) of 55 cm −1 , which was wider than that of the NaYF 4 : 18%Yb 3+ ,1% NPs. Therefore, we believe that the oleic-acid-coated KMnF 3 :Yb 3+ ,Er 3+ NPs have great potential in fabricating broadband waveguide amplifiers. Through epitaxial growth of a KMnF 3 : Yb 3+ active-shell on the core NPs, we compounded KMnF 3 :Yb 3+ ,Er 3+ @KMnF 3 :Yb 3+ core-active-shell NPs whose 1.5-µm infrared emissions intensity was 3.4 times as strong as that of the core NPs. In addition, we manufactured waveguide amplifiers using KMnF 3 :18%Yb 3+ ,1%Er 3+ @KMnF 3 :2%Yb 3+ NPs as the core materials of the waveguide amplifiers. When the input signal power was 0.2 mW and the pump power was 200 mW, we achieved a relative gain of 0.6 dB at 1534 nm in a 10-mm long waveguide.

Original languageEnglish
Article number463
JournalNanomaterials
Volume9
Issue number3
DOIs
StatePublished - Mar 2019
Externally publishedYes

Keywords

  • 1.5 µm
  • Broadband
  • Down-shifting luminescence
  • Er core-shell nanoparticles
  • KMnF :Yb
  • Polymer-based waveguide amplifiers

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