Second harmonic generation of metal nanoparticles under tightly focused illumination

doi:10.1088/1674-1056/25/3/037803

中国物理B ›› 2016, Vol. 25 ›› Issue (3): 37803-037803.doi: 10.1088/1674-1056/25/3/037803

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Second harmonic generation of metal nanoparticles under tightly focused illumination

Jing-Wei Sun(孙经纬), Xiang-Hui Wang(王湘晖), Sheng-Jiang Chang(常胜江),Ming Zeng(曾明), Na Zhang(张娜)

1. Institute of Modern Optics, Optical Information Science and Technology Key Laboratory of the Ministry of Education, Nankai University, Tianjin 300071, China;
2. School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

收稿日期:2015-09-21 修回日期:2015-10-10 出版日期:2016-03-05 发布日期:2016-03-05
通讯作者: Xiang-Hui Wang E-mail:wangxianghui@nankai.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61378005).

Second harmonic generation of metal nanoparticles under tightly focused illumination

Jing-Wei Sun(孙经纬)¹, Xiang-Hui Wang(王湘晖)¹, Sheng-Jiang Chang(常胜江)¹,Ming Zeng(曾明)², Na Zhang(张娜)¹

1. Institute of Modern Optics, Optical Information Science and Technology Key Laboratory of the Ministry of Education, Nankai University, Tianjin 300071, China;
2. School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

Received:2015-09-21 Revised:2015-10-10 Online:2016-03-05 Published:2016-03-05
Contact: Xiang-Hui Wang E-mail:wangxianghui@nankai.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61378005).

摘要/Abstract

摘要： The near-field and far-field second harmonic (SH) responses of a metal spherical nanoparticle placed in the focal region of a highly focused beam are investigated by using the calculation model based on three-dimensional finite-difference time-domain (FDTD) method. The results show that off-axis backward-propagating SH response can be reinforced by tightly focusing, due to the increase of the relative magnitude of the longitudinal field component and the phase shift along the propagation direction.

关键词: second harmonic generation, metal nanoparticles, focused field

Abstract: The near-field and far-field second harmonic (SH) responses of a metal spherical nanoparticle placed in the focal region of a highly focused beam are investigated by using the calculation model based on three-dimensional finite-difference time-domain (FDTD) method. The results show that off-axis backward-propagating SH response can be reinforced by tightly focusing, due to the increase of the relative magnitude of the longitudinal field component and the phase shift along the propagation direction.

Key words: second harmonic generation, metal nanoparticles, focused field

中图分类号: (Nanocrystals, nanoparticles, and nanoclusters)

78.67.Bf

42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.25.Dd (Wave propagation in random media) 78.68.+m (Optical properties of surfaces)

孙经纬, 王湘晖, 常胜江, 曾明, 张娜. Second harmonic generation of metal nanoparticles under tightly focused illumination[J]. 中国物理B, 2016, 25(3): 37803-037803.

Jing-Wei Sun(孙经纬), Xiang-Hui Wang(王湘晖), Sheng-Jiang Chang(常胜江),Ming Zeng(曾明), Na Zhang(张娜). Second harmonic generation of metal nanoparticles under tightly focused illumination[J]. Chin. Phys. B, 2016, 25(3): 37803-037803.

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Second harmonic generation of metal nanoparticles under tightly focused illumination

Second harmonic generation of metal nanoparticles under tightly focused illumination

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