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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/36549

Title: Plasmonic gap-mode nanocavities with metallic mirrors in high-index cladding
Authors: P. J. Cheng;C. Y. Weng;S. W. Chang;T. R. Lin;C. H Tien
Contributors: NTOU:Department of Mechanical and Mechatronic Engineering
Date: 2013-05
Issue Date: 2015-05-19T06:29:41Z
Publisher: Optics Express
Abstract: We theoretically analyze plasmonic gap-mode nanocavities covered by a thick cladding layer at telecommunication wavelengths. In the presence of high-index cladding materials such as semiconductors, the first-order hybrid gap mode becomes more promising for lasing than the fundamental one. Still, the significant mirror loss remains the main challenge to lasing. Using silver coatings within a decent thickness range at two end facets, we show that the reflectivity is substantially enhanced above 95 %. At a coating thickness of 50 nm and cavity length of 1.51 μm, the quality factor is about 150, and the threshold gain is lower than 1500 cm−1.
Relation: 21(11), pp.13479-13491
URI: http://ntour.ntou.edu.tw/handle/987654321/36549
Appears in Collections:[機械與機電工程學系] 期刊論文

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