Abstract
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 language | English |
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Article number | 151105 |
Journal | Applied Physics Letters |
Volume | 93 |
Issue number | 15 |
DOIs | |
Publication status | Published - 24 Oct 2008 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)