Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths

doi:10.1088/1674-1056/22/1/014212

Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (1): 14212-014212.doi: 10.1088/1674-1056/22/1/014212

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths

余本海, 张东玲, 李盈傧, 汤清彬

College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

收稿日期:2012-04-08 修回日期:2012-06-19 出版日期:2012-12-01 发布日期:2012-12-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11005088 and 11047145), the Science and Technology Project of Henan Province, China (Grant Nos. 102300410241 and 112300410021), and the Scientific Research Foundation of Education Department of Henan Province, China (Grant No. 2011B140018).

Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths

Yu Ben-Hai (余本海), Zhang Dong-Ling (张东玲), Li Ying-Bin (李盈傧), Tang Qing-Bin (汤清彬)

College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

Received:2012-04-08 Revised:2012-06-19 Online:2012-12-01 Published:2012-12-01
Contact: Yu Ben-Hai E-mail:hnyubenhai@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11005088 and 11047145), the Science and Technology Project of Henan Province, China (Grant Nos. 102300410241 and 112300410021), and the Scientific Research Foundation of Education Department of Henan Province, China (Grant No. 2011B140018).

摘要/Abstract

摘要： The optical nonlinearities of an Ag nanoparticle array are investigated by performing the Z-scan measurements at the selected wavelengths (400, 600, 650, and 800 nm). The nonlinear refraction index in the resonant region (around 400 nm) exhibits a significant enhancement by two orders compared with that in the off-resonant region (around 800 nm)), and exhibits an sign alternation of the resonant nonlinear absorption, which results in a negligible nonlinear absorption at a certain excitation intensity. Moreover, a low degree of nonlinear absorption was measured at the edges of the resonant region (600 and 650 nm), which is attributed to the competition of the saturated absorption and the two-photon absorption processes.

关键词: third-order optical nonlinearity, Ag nanoparticles, nanosphere lithography

Abstract: The optical nonlinearities of an Ag nanoparticle array are investigated by performing the Z-scan measurements at the selected wavelengths (400, 600, 650, and 800 nm). The nonlinear refraction index in the resonant region (around 400 nm) exhibits a significant enhancement by two orders compared with that in the off-resonant region (around 800 nm)), and exhibits an sign alternation of the resonant nonlinear absorption, which results in a negligible nonlinear absorption at a certain excitation intensity. Moreover, a low degree of nonlinear absorption was measured at the edges of the resonant region (600 and 650 nm), which is attributed to the competition of the saturated absorption and the two-photon absorption processes.

Key words: third-order optical nonlinearity, Ag nanoparticles, nanosphere lithography

中图分类号: (Other nonlinear optical materials; photorefractive and semiconductor materials)

42.70.Nq

78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters) 81.16.Nd (Micro- and nanolithography)

余本海, 张东玲, 李盈傧, 汤清彬. Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths[J]. Chin. Phys. B, 2013, 22(1): 14212-014212.

Yu Ben-Hai (余本海), Zhang Dong-Ling (张东玲), Li Ying-Bin (李盈傧), Tang Qing-Bin (汤清彬). Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths[J]. Chin. Phys. B, 2013, 22(1): 14212-014212.

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Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths

Nonlinear optical behaviours in a silver nanoparticle array at different wavelengths

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