Random lasing in Eu3+doped borate glass-ceramic embedded with Ag nanoparticles under direct three-photon excitation

Xuhui Xu, Wenfei Zhang, Limin Jin, Jianbei Qiu, Siu Fung Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

We report the observation of random lasing from Eu3+doped borate glass ceramic films embedded with Ag nanoparticles through three-photon absorption at room temperature. Under 1179 nm ultrashort femtosecond pulse excitation, discrete sharp peaks with linewidth ∼0.4 nm emerge randomly from a broad emission band with peak wavelength at ∼612 nm. In addition, the number of sharp peaks increases with the increase of excitation power. We also show that the emission spectrum varies with different observation angles and the corresponding lasing threshold is dependent on the excitation area. Hence, we verify unambiguously that the Eu3+doped borate glass ceramic film supports random lasing action via three-photon absorption excitation. In addition, Ag nanoparticles, which act as light scatterers, allow the formation of random microcavities inside the bulk film.
Original languageEnglish
Pages (from-to)16246-16250
Number of pages5
JournalNanoscale
Volume7
Issue number39
DOIs
Publication statusPublished - 21 Oct 2015

ASJC Scopus subject areas

  • Materials Science(all)

Cite this