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

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

Research output: Contribution to journalArticlepeer-review

38 Citations (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.

Original languageEnglish
Article number046013
JournalJournal of Biomedical Optics
Volume20
Issue number4
DOIs
Publication statusPublished - 1 Apr 2015

Keywords

  • Imaging
  • fiber-optics imaging.
  • interferometry
  • multimodal imaging
  • optical coherence tomography
  • remote sensing

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