Multimodal non-contact photoacoustic and OCT imaging with galvanometer scanning

Thomas Berer; Armin Hochreiner; Elisabeth Leiss-Holzinger; Johannes Bauer-Marschallinger; Andreas Buchsbaum

doi:10.1117/12.2077202

11 March 2015 Multimodal non-contact photoacoustic and OCT imaging with galvanometer scanning

Thomas Berer, Armin Hochreiner, Elisabeth Leiss-Holzinger, Johannes Bauer-Marschallinger, Andreas Buchsbaum

Proceedings Volume 9323, Photons Plus Ultrasound: Imaging and Sensing 2015; 93233T (2015) https://doi.org/10.1117/12.2077202
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

In this paper we present multimodal non-contact photoacoustic and optical coherence tomography (OCT) imaging using a galvanometer scanner. Photoacoustic signals are acquired without contact on the surface of a specimen using an interferometric technique. The interferometer is realized in a fiber-optic network using a fiber laser at 1550 nm as source. In the same fiber-optic network a spectral-domain OCT system is realized, using a broadband light source at 1300 nm. Light from the fiber laser and the OCT source are multiplexed into the same fiber and the same objective is used for both imaging modalities. Fast non-contact photoacoustic and OCT imaging is demonstrated by scanning the detection spot utilizing a galvanometer scanner. Multimodal photoacoustic and OCT imaging is shown on agarose phantoms. As the same fiber network and optical components are used for non-contact photoacoustic and OCT imaging the obtained images are co-registered intrinsically.

Citation Download Citation

Thomas Berer, Armin Hochreiner, Elisabeth Leiss-Holzinger, Johannes Bauer-Marschallinger, and Andreas Buchsbaum "Multimodal non-contact photoacoustic and OCT imaging with galvanometer scanning", Proc. SPIE 9323, Photons Plus Ultrasound: Imaging and Sensing 2015, 93233T (11 March 2015); https://doi.org/10.1117/12.2077202

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KEYWORDS

Optical coherence tomography

Photoacoustic spectroscopy

Photoacoustic imaging

Fiber optics

Fiber optic networks

Interferometry

Light sources

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