Free beam Fabry-Perot-interferometer as detector for photoacoustic tomography

Gratt, Sibylle; Wurzinger, Gerhild; Nuster, Robert; Paltauf, Guenther

doi:10.1117/12.2032964

Cited by 3 publications

(2 citation statements)

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“…Existing methods generally fall into four categories: (1) free-space-optics based approaches, including Michelson interferometers [32] or Mach-Zehnder (MZ) interferometers [31, 33–40], Fabry-Perot (FP) interferometers [41–44], laser-beam MZ [45–49] and FP interferometers [50], and FP optical-films [51–60]; (2) fiber-optics based approaches, including intrinsic optical fiber interferometers [61–67], fiber Bragg gratings [68–73], and fiber FP probes [74–77]; (3) photonic integrated circuits, such as waveguide MZ interferometers [78], Bragg grating waveguides [79], and micro ring resonators (MRR) [30, 80–83]; and (4) optical interface based approaches, such as Fresnel reflection [84, 85] or surface-bonded photonic modes including photonic crystal surface wave [86, 87], surface plasmon resonance [88–91] and metamaterials [92]. We classify these optical ultrasound detection methods based on their implementation in PA imaging, which provides a guideline for readers to select detectors for their specific PA applications.…”

Section: Optical Ultrasound Detectors and Applicationsmentioning

confidence: 99%

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Optical Detection of Ultrasound in Photoacoustic Imaging

Dong¹,

Sun²,

Zhang

2017

IEEE Trans. Biomed. Eng.

135

116

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Objective Photoacoustic (PA) imaging emerges as a unique tool to study biological samples based on optical absorption contrast. In PA imaging, piezoelectric transducers are commonly used to detect laser-induced ultrasonic waves. However, they typically lack adequate broadband sensitivity at ultrasonic frequency higher than 100 MHz while their bulky size and optically opaque nature cause technical difficulties in integrating PA imaging with conventional optical imaging modalities. To overcome these limitations, optical methods of ultrasound detection were developed and shown their unique applications in photoacoustic imaging. Methods We provide an overview of recent technological advances in optical methods of ultrasound detection and their applications in PA imaging. A general theoretical framework describing sensitivity, bandwidth, and angular responses of optical ultrasound detection is also introduced. Results Optical methods of ultrasound detection can provide improved detection angle and sensitivity over significantly extended bandwidth. In addition, its versatile variants also offer additional advantages, such as device miniaturization, optical transparency, mechanical flexibility, minimal electrical/mechanical crosstalk, and potential noncontact PA imaging. Conclusion The optical ultrasound detection methods discussed in this review and their future evolution may play an important role in photoacoustic imaging for biomedical study and clinical diagnosis.

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Section: Optical Ultrasound Detectors and Applicationsmentioning

confidence: 99%

“…Direct detection of acoustic pressure can also be achieved by a modified MZ interferometers [45–49] and FP interferometers [50], in which the pressure field is integrated along a detection laser beam (Fig. 1c).…”

Section: Optical Ultrasound Detectors and Applicationsmentioning

confidence: 99%

Optical Detection of Ultrasound in Photoacoustic Imaging

Dong¹,

Sun²,

Zhang

2017

IEEE Trans. Biomed. Eng.

135

116

View full text Add to dashboard Cite

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Optical ultrasound sensing for biomedical imaging

2022

Measurement

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Ultrafast optical phase-sensitive ultrasonic detection via dual-comb multiheterodyne interferometry

Tong

Guo

et al. 2022

Adv. Photon. Nexus

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Highly sensitive and broadband ultrasound detection is important for photoacoustic imaging, biomedical ultrasound, and ultrasonic nondestructive testing. The elasto-optical refractive index modulation induced by ultrasound arouses a transient phase shift of a probe beam. Highly sensitive phase detection with a high Q factor resonator is desirable to visualize the ultraweak transient ultrasonic field. However, current phase-sensitive ultrasonic detectors suffer from limited bandwidth, mutual interference between intensity and phase, and significant phase noise, which become key to limiting further improvement of detection performance. We report a phase-sensitive detector with a bandwidth of up to 100 MHz based on dual-comb multiheterodyne interferometry (DCMHI). By sensing the phase shift induced by the ultrasound without any resonators in the medium, the DCMHI boosted the phase sensitivity by coherent accumulation without any magnitude averaging and extra radio frequency amplification. DCMHI offers high sensitivity and broad bandwidth as the noise-equivalent pressure reaches 31 mPa∕ p Hz under 70 MHz acoustic responses. With a large repetition rate difference of up to 200 MHz of dual comb, DCMHI can achieve broadband acoustic responses up to 100 MHz and a maximum possible imaging acquisition rate of 200 MHz. It is expected that DCMHI can offer a new perspective on the new generation of optical ultrasound detectors.

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Free beam Fabry-Perot-interferometer as detector for photoacoustic tomography

Cited by 3 publications

References 0 publications

Optical Detection of Ultrasound in Photoacoustic Imaging

Optical Detection of Ultrasound in Photoacoustic Imaging

Optical ultrasound sensing for biomedical imaging

Ultrafast optical phase-sensitive ultrasonic detection via dual-comb multiheterodyne interferometry

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