Highly efficient nonresonant two-photon absorption in ZnO pellets

S. Mani*, J. I. Jang, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In this article, we report direct evidence for efficient nonresonant two-photon absorption-induced luminescence in ZnO pellets at 2 K and room temperature. Stimulated emission near the band edge is observed at room temperature employing this form of excitation under low excitation levels over a broad range of excitation wavelengths. The steady-state population dynamics based on the time-integrated photoluminescence spectra at 2 K indicates that this nonresonant two-photon excitation is much more efficient in creating excitonic matter, compared with the traditional one-photon excitation method.

Original languageEnglish (US)
Article number041902
JournalApplied Physics Letters
Volume93
Issue number4
DOIs
StatePublished - Aug 15 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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