The formation characteristics of closed-loop random cavities inside highly disordered ZnO polycrystalline thin films

Siu Fung Yu, H. D. Li, A. P. Abiyasa, Eunice S.P. Leong, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

The formation characteristics of closed-loop random cavities inside highly disordered ZnO films with and without rib waveguide structure are investigated. The size dependence of the random cavities inside the random media on temperature and pump intensity profile is studied by applying Fourier transform to the corresponding lasing spectra. Simple rate equation analysis has revealed that the formation of the random cavities depends mainly on the profile of the optical gain, which is a function of the pump intensity profile and carrier diffusion length of the random media.
Original languageEnglish
Article number121126
JournalApplied Physics Letters
Volume88
Issue number12
DOIs
Publication statusPublished - 20 Mar 2006
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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