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Observation of coherent biexcitons in ZnO/ZnMgO multiple quantum wells at room temperature

Davis, Jeffrey A.; Van Dao, Lap; Wen, Xiaoming; Hannaford, Peter; Coleman, Victoria A; Jagadish, C.; Koike, K.; Sasa, S.; Inoue, M.; Yano, M.; Tan, Hark Hoe


We have studied ZnO∕ZnMgO multiple quantum wells by spectrally resolved transient four-wave mixing with both one- and two-color excitations. The presence of an extended signal at negative interpulse delays in the two-color experiment is attributed to the two-photon coherence resulting from the generation of biexcitons. This technique provides a means to observe a transient four-wave mixing from biexcitons in the absence of any other signal, and thereby provides the first clear evidence that...[Show more]

CollectionsANU Research Publications
Date published: 2006-11-01
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.2372747


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