Optical loss compensation in a bulk left-handed metamaterial by the gain in quantum dots

被引：50

作者：

Dong, Zheng-Gao ^{[1
]}

Liu, Hui ^{[2
]}

Li, Tao ^{[2
]}

Zhu, Zhi-Hong ^{[2
]}

Wang, Shu-Ming ^{[2
]}

Cao, Jing-Xiao ^{[2
]}

Zhu, Shi-Ning ^{[2
]}

Zhang, X. ^{[3
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Univ Calif Berkeley, Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 04期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

IV-VI semiconductors; lead compounds; metamaterials; semiconductor quantum dots; surface plasmons; NEGATIVE-INDEX METAMATERIALS; REFRACTIVE-INDEX; LASING SPASER; FREQUENCIES; AMPLIFICATION; WAVELENGTHS; MEDIA;

D O I：

10.1063/1.3302409

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：3

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