Efficient laser-ultrasound generation by using heavily absorbing films as targets

Biagi, E.; Margheri, Fabrizio; Menichelli, D.

doi:10.1109/58.971720

Cited by 115 publications

(76 citation statements)

References 27 publications

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“…These disadvantages lead to significant limitations on the reliability and the number of transducers that can be imbedded in a structure. These disadvantages can be overcome by fiber-optic transducers [2,3,[5][6][7]. For embedded applications, optical fiber is used to deliver the optical power to the location of interest to induce thermoelastic expansion in the material for laser ultrasound generation.…”

Section: Introductionmentioning

confidence: 99%

Distributed fiber-optic laser-ultrasound generation based on ghost-mode of tilted fiber Bragg gratings

Tian¹,

Zhang²,

Han³

2013

Opt. Express

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Active ultrasonic testing is widely used for medical diagnosis, material characterization and structural health monitoring. Ultrasonic transducer is a key component in active ultrasonic testing. Due to their many advantages such as small size, light weight, and immunity to electromagnetic interference, fiber-optic ultrasonic transducers are particularly attractive for permanent, embedded applications in active ultrasonic testing for structural health monitoring. However, current fiberoptic transducers only allow effective ultrasound generation at a single location of the fiber end. Here we demonstrate a fiber-optic device that can effectively generate ultrasound at multiple, selected locations along a fiber in a controllable manner based on a smart light tapping scheme that only taps out the light of a particular wavelength for laser-ultrasound generation and allow light of longer wavelengths pass by without loss. Such a scheme may also find applications in remote fiber-optic device tuning and quasidistributed biochemical fiber-optic sensing. 1175-1179 (1985).

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Section: Introductionmentioning

confidence: 99%

Distributed fiber-optic laser-ultrasound generation based on ghost-mode of tilted fiber Bragg gratings

Tian¹,

Zhang²,

Han³

2013

Opt. Express

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Section: Fiber-optic Transmittersmentioning

confidence: 99%

“…Graphite powder and epoxy are used as LGUS transmitters in this device. The carbon-based fiber-optic LGUS transmitter typically has higher photoacoustic conversion efficiency than its metallic-based counterpart [63]. Besides broadband and efficient ultrasound generation, the fiber-optic LGUS transmitter possesses many advantages such as compact size, lightweight, ease of use, and immunity to electromagnetic interference.…”

Section: Fiber-optic Transmittersmentioning

confidence: 99%

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

Chen

2016

Applied Sciences

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Abstract:Medical ultrasound is an imaging technique that utilizes ultrasonic signals as information carriers, and has wide applications such as seeing internal body structures, finding a source of a disease, and examining pregnant women. The most commonly used ultrasonic transducer today is based on piezoelectricity. The piezoelectric transducer, however, may have a limited bandwidth and insufficient sensitivity for reduced element size. Laser-generated ultrasound (LGUS) technique is an effective way to resolve these issues. The LGUS approach based on photoacoustic effect is able to greatly enhance the bandwidth of ultrasound signals and has the potential for high-resolution imaging. High-amplitude LGUS could also be used for therapy to accomplish high precision surgery without an incision. Furthermore, LGUS in conjunction with optical detection of ultrasound allows all-optical ultrasound imaging (i.e., ultrasound is generated and received optically). The all-optical platform offers unique advantages in providing high-resolution information and in facilitating the construction of miniature probes for endoscopic ultrasound. In this article, a detailed review of the recent development of various LGUS transmitters is presented. In addition, a recent research interest in all-optical ultrasound imaging, as well as its applications, is also discussed.

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“…In 2001 we improved, of about two orders of magnitude, the optoacoustic conversion by replacing the metal absorbing target with a graphite one [3,4].…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic Broadband Ultrasonic Probe for Virtual Biopsy: Technological Solutions

Biagi

Cerbai

Masotti

et al. 2011

Lecture Notes in Electrical Engineering

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An ultrasonic probe was developed by using, in conjunction, optoacoustic and acousto-optic devices based on fiber optic technology. The intrinsic high frequency and wide bandwidth associated both to the opto-acoustic source and to the acousto-optic receiving element could open a way towards a "virtual biopsy" of biological tissue. A Micro-Opto-Mechanical-System (MOMS) approach is proposed to realize the broadband ultrasonic probe on micromachined silicon frames suited to be mounted on the tip of optical fibers.

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Efficient laser-ultrasound generation by using heavily absorbing films as targets

Cited by 115 publications

References 27 publications

Distributed fiber-optic laser-ultrasound generation based on ghost-mode of tilted fiber Bragg gratings

Distributed fiber-optic laser-ultrasound generation based on ghost-mode of tilted fiber Bragg gratings

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

Fiber Optic Broadband Ultrasonic Probe for Virtual Biopsy: Technological Solutions

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