Enhancing extraction of light from metal composite structures for plasmonic emitters using light-coupling effect

Nan Fu Chiu, Chen Du Yang, Yi Lun Kao, Kuan Lin Lu

Research output: Contribution to journalArticle

3 Citations (Scopus)


This work demonstrates the efficiency and directionality of a method of extracting light from thin-film emissive devices by near-field evanescent waves in plasmonic emitters used in metal composite grating structures. A near-field evanescent wave can induce a surface Plasmon wave on the surface of a metal under resonant conditions. Enhancing the near-field evanescent wave generates strong far-field nonlinear optical effects. This effect is highly efficient in some plasmonic emitter structures. Theoretical and experimental results demonstrate that such a metal composite grating structure exhibits good performance, a high coupling ratio, a small coupling angle, enhanced light extraction and a small FWHM. It also improves luminous efficiency, emitter angle, and directivity.

Original languageEnglish
Pages (from-to)9602-9611
Number of pages10
JournalOptics Express
Issue number8
Publication statusPublished - 2015 Jan 1


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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