Highly sensitive and miniature microfiber-based ultrasound sensor for photoacoustic tomography

作     者：Liuyang Yang Yanpeng Li Fang Fang Liangye Li Zhijun Yan Lin Zhang Qizhen Sun Liuyang Yang;Yanpeng Li;Fang Fang;Liangye Li;Zhijun Yan;Lin Zhang;and Qizhen Sun

作者机构：School of Optical and Electronic Information&National Engineering Laboratory for Next Generation Internet Access System(NGIA)&Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and TechnologyWuhan 430074China Aston Institute of Photonic TechnologiesAston UniversityBirmingham B47ETUK. 

出 版 物：《Opto-Electronic Advances》 (光电进展（英文）)

年 卷 期：2022年第5卷第6期

页      面：55-62页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：financial supports from National Natural Science Foundation of China (NSFC)(No.61922033) Foundation for Innovative Research Groups of Hubei Province of China (2018CFA004) Innovation Fund of WNLO 

主　　题：ultrasound sensor microfiber photoacoustic tomography 

摘      要：A microfiber with large evanescent field encapsulated in PDMS is proposed and demonstrated for ultrasound *** compact size and large evanescent field of microfiber provide an excellent platform for the interaction between optical signal and ultrasound wave,exhibiting a high sensitivity of 3.5 mV/kPa,which is approximately 10 times higher than the single-mode fiber ***,a phase feedback stabilization module is introduced into the coherent demodulation system for long-term stable *** addition,a photoacoustic tomography experiment with the microfiber ultrasound sensor is implemented to verify the excellent performance on imaging,with the depth of 12 mm,the highest lateral resolution of 65μm and axial resolution of 250μm,*** highly sensitive microfiber ultrasound sensor provides a competitive alternative for various applications,such as industrial non-destructive testing,biomedical ultrasound and photoacoustic imaging.