Kang Zeng, Linzhou Zeng, Peng Yang, Yougang Ke, Zhiwei Huang
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引用次数: 0
Abstract
Photonic spin Hall effect (PSHE) has been widely used for sensing tasks; however, its potential appears to be unexplored for the development of a compact yet effective sensor for the classification of liquid chemicals. In this study, a liquid identification scheme is demonstrated based on the recently proposed rotational PSHE, where the weak measurement techniques are no longer required for sensing. A liquid crystal device is fabricated to experimentally validate the rotational PSHE, which provides unique beam patterns for liquid analytes. The collected beam pattern images are used to train an EfficientNet-V2─a fast and efficient deep learning architecture─for classifying the liquid chemicals. Two groups of liquids are identified with accuracy over 99% in the proposed scheme. Moreover, the performances of several deep learning models are compared, demonstrating the fast training speed and high parameter efficiency of the EfficientNet-V2. The proposed approach provides an efficient, accurate, and convenient method for refractive index sensing.
期刊介绍:
Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.