Low-loss and directional output ZnO thin-film ridge waveguide random lasers with MgO capped layer

Clement Yuen, Siu Fung Yu, Eunice S.P. Leong, H. Y. Yang, Shu Ping Lau, N. S. Chen, H. H. Hng

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52 Citations (Scopus)


Room-temperature ultraviolet lasing characteristics of ZnO thin-film ridge-waveguide random lasers with MgO capped layer fabricated on n -type (100) Si substrate are reported. It is demonstrated that highly directional emission from the facets of the random lasers can be achieved. Reduction of scattering loss inside the random cavities can also be obtained. In addition, the improvement in the efficiency of the lasing characteristics of the random lasers by optical feedback is studied.
Original languageEnglish
Article number031112
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number3
Publication statusPublished - 17 Jan 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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