2011•Advanced MaterialsRequires access

Room Temperature Excitonic Whispering Gallery Mode Lasing from High‐Quality Hexagonal ZnO Microdisks

Rui Chen, Bo Ling, Xiao Wei Sun, Handong Sun

Abstract

High-quality ZnO microdisks are prepared by a vapor phase transport method. The ZnO microdisks have perfect hexagonal shape and exhibit strong excitonic lasing under optical excitation at room temperature. The observed lasing modes match well with whispering gallery modes.

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Key concepts: Lasing threshold, Whispering-gallery wave, Materials science, Whispering gallery, Optoelectronics, Hexagonal crystal system, Excitation, Laser