Multimodal noncontact photoacoustic and optical coherence tomography imaging using wavelength-division multiplexing

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

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

40 Zitate (Scopus)

Abstract

We present multimodal noncontact photoacoustic (PA) and optical coherence tomography (OCT) imaging. PA signals are acquired remotely on the surface of a specimen with a Mach-Zehnder interferometer. The interferometer is realized in a fiber-optic network using a fiber laser at 1550 nm as the source. In the same fiber-optic network, a spectral-domain OCT system is implemented. The OCT system utilizes a supercontinuum light source at 1310 nm and a spectrometer with an InGaAs line array detector. Light from the fiber laser and the OCT source is multiplexed into one fiber using a wavelength-division multiplexer; the same objective is used for both imaging modalities. Reflected light is spectrally demultiplexed and guided to the respective imaging systems. We demonstrate two-dimensional and three-dimensional imaging on a tissue-mimicking sample and a chicken skin phantom. The same fiber network and same optical components are used for PA and OCT imaging, and the obtained images are intrinsically coregistered.

OriginalspracheEnglisch
Aufsatznummer046013
FachzeitschriftJournal of Biomedical Optics
Jahrgang20
Ausgabenummer4
DOIs
PublikationsstatusVeröffentlicht - 1 Apr. 2015

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