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Optoacoustic microscopy based on pi-FBG ultrasound sensors.
Proc. SPIE 10064:1006423 (2017)
We present an optoacoustic (photoacoustic) microscopy (OAM) imaging system that uses a pi-shifted Fiber Bragg Grating (pi-FBG) as ultrasound (US) sensor. The sensor has an ultra-small footprint and hence allows for the detection of optoacoustic signals in close proximity to their origin. The interrogation of the pi-FBG is performed by a broadband pulsed laser, enabling a high sensitivity of the sensor as well as the elimination of ambient noise. We characterize the pi-FBG in terms of axial and lateral resolution as well as its bandwidth and find that its performance is comparable to US sensors that are based on the piezoelectric effect. We demonstrate the system’s capabilities by images taken from ex vivo zebrafish and mouse ear samples. The results presented herein highlight that pi-FBGs are a promising tool for the comprehensive label-free optoacoustic imaging of biomedical samples.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Optoacoustic microscopy; photoacoustic microscopy; interferometric detection of ultrasound; Fiber Bragg-Grating
ISSN (print) / ISBN
0277-786X
e-ISSN
1996-756X
Conference Title
Photons Plus Ultrasound: Imaging and Sensing 2017
Conference Date
28.01. – 02.02.2017
Conference Location
San Francisco, California, United States
Journal
Proceedings of SPIE
Quellenangaben
Volume: 10064,
Article Number: 1006423
Publisher
SPIE
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)