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Weak-value amplified surface plasmon resonance sensor based on joint detection of optical activity and refractive index
Xu, Liping1; Yao, Xin1; Wen, Gang1; Xu, Jiangtao1; Luo, Lan2; Zhang, Zhiyou3; Wu, Hao4; Wu, Peng4; Chang, Tianying5; Cui, Hong-liang5
2023-12-04
摘要A versatile system combining surface plasmon resonance (SPR) and weak value amplification (WVA) is presented, which can measure the optical activity and refractive index of chiral/achiral molecules, ionic compounds, and their mixture in solution individually or simultaneously. The variations in output light intensity directly exhibit high sensitivity to changes in optical activity and refractive index of the aforementioned substances. Furthermore, by examining the correlation between the intensity variation trend and the optical activity of the chiral molecule, the molecule's absolute configuration can be ascertained. Utilizing this instrument, optical rotation with a resolution of 3.04 x 10-6 rad and refractive index with a resolution of 5.57 x 10-9 RIU were obtained. As an attempt at practical application, this sensor was used to detect the adulteration of glucose and fructose in pure honey. Not only can such compromised honey be distinguished from pure honey using the refractive index or optical rotation, but the difference in optical activity can also be employed to effectively differentiate between adulterated honey samples containing glucose and fructose separately.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
DOI10.1364/OE.506840
发表期刊OPTICS EXPRESS
ISSN1094-4087
卷号31期号:25页码:41622-41634
通讯作者Wu, Peng(wupeng@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:001124433700003
语种英语