Enhancement of ultraviolet lasing from Ag-coated highly disordered ZnO films by surface-plasmon resonance

被引：98

作者：

Abiyasa, A. P. ^{[1
]}

Yu, S. F. ^{[1
]}

Lau, S. P. ^{[1
]}

Leong, Eunice S. P. ^{[1
]}

Yang, H. Y. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 23期

关键词：

D O I：

10.1063/1.2746940

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Large improvement in random lasing action at ultraviolet wavelength has been achieved from highly disordered ZnO films with Ag coating. The lasing threshold can be reduced by two times and slope efficiency can be increased by 5.5 times. The improvement is due to the presence of Ag coating, which enhances the surface coupling of lasing emission from the ZnO films by surface-plasmon resonance and reduces the scattering loss experienced by the random cavity modes. Furthermore, the enhancement of lasing efficiency is dependent on the Ag coating's surface roughness, which can be controlled through the surface morphology of ZnO films. (c) 2007 American Institute of Physics.

引用

页数：3

共 6 条

[1]

Lai CW, 2005, APPL PHYS LETT, V86, DOI 10.1063/1.1954883

[2]

UV random lasing action in p-SiC(4H)/i-ZnO-SiO2 nanocomposite/n-ZnO:Al heterojunction diodes [J].

Leong, Eunice S. P. ;

Yu, Siu Fung .

ADVANCED MATERIALS, 2006, 18 (13) :1685-+

[3]

Surface-plasmon-enhanced light emitters based on InGaN quantum wells [J].

Okamoto, K ;

Niki, I ;

Shvartser, A ;

Narukawa, Y ;

Mukai, T ;

Scherer, A .

NATURE MATERIALS, 2004, 3 (09) :601-605

[4]

Recent advances in processing of ZnO [J].

Pearton, SJ ;

Norton, DP ;

Ip, K ;

Heo, YW ;

Steiner, T .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2004, 22 (03) :932-948

[5]

Coupled surface plasmon-polariton mediated photoluminescence from a top-emitting organic light-emitting structure [J].

Wedge, S ;

Wasey, JAE ;

Barnes, WL ;

Sage, I .

APPLIED PHYSICS LETTERS, 2004, 85 (02) :182-184

[6]

Zinc oxide thin-film random lasers on silicon substrate [J].

Yu, SF ;

Yuen, C ;

Lau, SP ;

Lee, HW .

APPLIED PHYSICS LETTERS, 2004, 84 (17) :3244-3246

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