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Open AccessArticle

Two-Photon Luminescence and Second Harmonic Generation from Gold Micro-Plates

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Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, West Beichen Road NO.1, Chaoyang District, Beijing 100101, China
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Institute of Optoelectronic Materials and Technology, South China Normal University, West Zhongshan Avenue NO.55, Tianhe District, Guangzhou 510631, China
*
Author to whom correspondence should be addressed.
Author who currently works at Chongqing BOE Optoelectronics Technology Co. Ltd., Yunhan Avenue NO.5, Shuitu High-Tech Industrial Park, Beibei District, Chongqing 400714, China.
Sensors 2014, 14(10), 18328-18336; https://doi.org/10.3390/s141018328
Received: 2 June 2014 / Revised: 10 September 2014 / Accepted: 16 September 2014 / Published: 29 September 2014
(This article belongs to the Section Biosensors)
Micron-sized gold plates were prepared by reducing chloroauric acid with lemongrass extract. Their two-photon luminescence (TPL) and second harmonic generation (SHG) were investigated. The results show that the TPL and SHG intensity of gold plates is dependent on the wavelength and polarization of excitation laser. The TPL intensity of gold plates decreases with the increase of the excitation wavelength except for a small peak around 820–840 nm, while SHG intensity increases with the excitation wavelength redshift. In addition, it is found that the TPL intensity of the gold plate’s edge is related with the angle between the edge orientation and the polarization direction of the excitation light. The TPL intensity increases with the angle increase from 0° to 90°. View Full-Text
Keywords: gold micro-plates; two-photon luminescence; second harmonic generation gold micro-plates; two-photon luminescence; second harmonic generation
MDPI and ACS Style

Wang, X.; Shi, H.; Wang, N.; Cheng, L.; Gao, Y.; Huang, L.; Jiang, Y. Two-Photon Luminescence and Second Harmonic Generation from Gold Micro-Plates. Sensors 2014, 14, 18328-18336.

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