Phonon imaging in 3D with a fibre probe
作者机构：Optics and Photonics GroupFaculty of EngineeringUniversity of NottinghamUniversity ParkNottingham NG72RDUK
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2021年第10卷第6期
页 面：1007-1019页
核心收录：
学科分类：0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学]
基 金：the Engineering and Physical Sciences Research Council[grant number EP/K021877/1 EP/G061661/1 EP/L015587/1] The authors would like to thank YouCare Tech no logy Co. Ltd Rolls-Royce pic NDEvR(RCNDE) and the Royal Academy of Engineering Research Fellowship scheme
摘 要：We show for the first time that a single ultrasonic imaging fibre is capable of simultaneously accessing 3D spatial information and mechanical properties from microscopic *** novel measurement system consists of two ultrafast lasers that excite and detect high-frequency ultrasound from a nano-transducer that was fabricated onto the tip of a single-mode optical fibre.A signal processing technique was also developed to extract nanometric in-depth spatial measurements from GHz frequency acoustic waves,while still allowing Brillouin spectroscopy in the frequency ***-free and non-contact imaging performance was demonstrated on various polymer *** singular device is equipped with optical lateral resolution,2.5μm,and a depth-profiling precision of 45 nm provided by *** endoscopic potential for this device is exhibited by extrapolating the single fibre to tens of thousands of fibres in an imaging *** a device catalyses future phonon endomicroscopy technology that brings the prospect of label-free in vivo histology within reach.
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