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

Sensors

Xu Wang²  Hao Shi¹  Naiyin Wang¹  Lianghui Cheng¹  Ying Gao¹  Lu Huang² 

[1] Institute of Optoelectronic Materials and Technology, South China Normal University, West Zhongshan Avenue NO.55, Tianhe District, Guangzhou 510631, China; E-Mails:;Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, West Beichen Road NO.1, Chaoyang District, Beijing 100101, China; E-Mails:

关键词: gold micro-plates;    two-photon luminescence;    second harmonic generation;   

DOI  :  10.3390/s141018328

来源: mdpi

【 摘 要 】

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°.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.