期刊
APPLIED PHYSICS LETTERS
卷 96, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3302409
关键词
IV-VI semiconductors; lead compounds; metamaterials; semiconductor quantum dots; surface plasmons
资金
- National Natural Science Foundation of China [10604029, 10704036, 10874081, 10904012]
- Research Fund for the Doctoral Program of Higher Education of China [20090092120031]
- Natural Science Foundation of Jiangsu Province of China [BK2009265]
A bulk left-handed metamaterial with fishnet structure is investigated to show the optical loss compensation via surface plasmon amplification with the assistance of the gain medium of PbS quantum dots. Simultaneously negative permittivity and permeability are confirmed at the telecommunication wavelength (1.5 mu m) by the retrieval of the effective electromagnetic property. The dependence of enhanced transmission on the gain coefficient, as well as on the propagation layers, demonstrates that ultralow loss is feasible in bulk left-handed metamaterials.
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