Visible red random lasing in Y2O3: Eu3+/ZnO polycrystalline thin films by energy transfer from ZnO films to Eu3+

M. K. Chong, A. P. Abiyasa, K. Pita, Siu Fung Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)


Visible red random lasing centered at ∼611 nm has been observed in Y2 O3: Eu3+ /ZnO films at room temperature. Using a 355 nm laser source to excite the ZnO films, ultraviolet (UV) random lasing has been observed. The UV lasing spectrum can be tuned to overlap strongly with the F7 0 - L5 6 excitation spectrum of Eu3+ ions centered at ∼394 nm by controlling the pump power, leading to very efficient radiative energy transfer from the ZnO films to Eu3+ ions. As a result, a red random lasing centered at ∼611 nm corresponding to the D5 0 - F7 2 transition of Eu3+ ions was observed.
Original languageEnglish
Article number151105
JournalApplied Physics Letters
Issue number15
Publication statusPublished - 24 Oct 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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