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0.1117-1.JBO.27.4.046001 |
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|a 15602281 (ISSN)
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|a Comparing free-space and fiber-coupled detectors for Fabry-Pérot-based all-optical photoacoustic tomography
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|b NLM (Medline)
|c 2022
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|z View Fulltext in Publisher
|u https://doi.org/10.1117/1.JBO.27.4.046001
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|a SIGNIFICANCE: Highly sensitive detection is crucial for all-optical photoacoustic (PA) imaging. However, free-space optical detectors are prone to optical aberrations, which can degrade the pressure sensitivity and result in deteriorated image quality. While spatial mode-filtering has been proposed to alleviate these problems in Fabry-Pérot-based pressure sensors, their real functional advantage has never been properly investigated. AIM: We rigorously and quantitatively compare the performance of free-space and fiber-coupled detectors for Fabry-Pérot-based pressure sensors. APPROACH: We develop and characterize a quantitative correlative setup capable of simultaneous PA imaging using a free space and a fiber-coupled detector. RESULTS: We found that fiber-coupled detectors are superior in terms of both signal level and image quality in realistic all-optical PA tomography settings. CONCLUSIONS: Our study has important practical implications in the field of PA imaging, as for most applications and implementations fiber-coupled detectors are relatively easy to employ since they do not require modifications to the core of the system but only to the peripherally located detector.
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|a detectors
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|a Fabry–Perot
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|a fiber applications
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|a imaging
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|a photoacoustics
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|a tomography
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|a Czuchnowski, J.
|e author
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|a Prevedel, R.
|e author
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|t Journal of biomedical optics
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