Transceiver integrated all-optical ultrasonic transducer device and preparation method thereof

An ultrasonic transducer, an integrated technology, applied in the direction of fluid using vibration, etc., can solve the problems of increasing the complexity of photoacoustic signal processing, increasing the spatial resolution of imaging, unfavorable device miniaturization, etc., to achieve process feasibility, Conducive to acoustic imaging and compact structure
CN111112035BActive Publication Date: 2021-02-09HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2021-02-09

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Abstract

The invention belongs to the technical field of photoacoustic detection, and discloses a transceiver-integrated all-optical ultrasonic transducer device and a preparation method thereof. The device comprises a structured base (2), a suspension film (3), a double-clad optical fiber ( 1) and the F-P cavity (4) that they cooperate to build; the suspended film is a composite photoacoustic conversion film, which can absorb the laser beam energy of the excitation light and convert it into ultrasonic waves and emit them outward to realize the emission of sound waves; at the same time, it can receive ultrasonic waves The echo, through the deformation-induced sound wave return signal, affects the cavity length of the F-P cavity and the returned detection optical signal, and the sound wave can be received by detecting the returned detection optical signal. The present invention improves the structure of each component and their cooperative working methods, etc., and uses the suspended film and the further constructed F-P cavity to complete the entire process of ultrasonic emission and reception on a suspended film, and the device structure is more compact , The operation of photoacoustic imaging is easier and the result is more accurate.
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Description

technical field

[0001] The invention belongs to the technical field of photoacoustic detection, and more specifically relates to a transceiver integrated all-optical ultrasonic transducer device and a preparation method thereof. The device is a transceiver-integrated photoacoustic detector device based on the all-optical method. Background technique

[0002] Ultrasonic transducers are energy conversion devices that work in the ultrasonic frequency range and can transmit ultrasonic signals and convert acoustic signals in the external sound field into other signals (such as electrical signals). Ultrasound is widely used in industry, agriculture, national defense, biomedicine, and scientific research due to its strong penetrating power, good clustering, large amount of information carrying, and easy realization of fast and accurate online non-destructive testing and non-destructive diagnosis. The new ultrasonic transducer based on the photoacoustic effect has gradually become a...

Claims

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