Zinc oxide thin-film random lasers on silicon substrate

Siu Fung Yu, Clement Yuen, Shu Ping Lau, H. W. Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

145 Citations (Scopus)


The room-temperature lasing in mirrorless zinc oxide thin-film waveguides on (100) silicon substrate was demonstrated. Through the post-growth annealing of high-crystal-quality zinc oxide thin films, laser cavities, due to closed-loop optical scattering from the lateral facets of the irregular zinc oxide grains, were generated. The high-intensity UV lasing from the mirror-less ZnO thin-film waveguides on lattice-mismatched silicon substrate was observed. It was found that the linewidth and lasing wavelength of the zinc oxide random lasers under 355 nm optical excitation were less than 0.4 nm and 390 nm, respectively.
Original languageEnglish
Pages (from-to)3244-3246
Number of pages3
JournalApplied Physics Letters
Issue number17
Publication statusPublished - 26 Apr 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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