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Updated: May 17, 2026

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
Published on: January 15, 2013
Intrasweep phase-sensitive optical coherence tomography for noncontact optical photoacoustic imaging
Cedric Blatter1, Branislav Grajciar, Pu Zou
1Group of Biomedical Optics, Center of Medical Physics and Biomedical Engineering, Medical University Vienna, Vienna, Austria.
Abstract:
We introduce a method to extract the photoacoustic (PA) signal from the phase time evolution of an optical coherence tomography (OCT) swept source spectral sweep. This all-optical detection is achieved in a noncontact fashion directly on the sample surface by using its specular reflection. High-speed measurement and referencing allow for close to shot noise limited phase-sensitive detection. It offers a simple way to perform OCT and PA imaging by sharing the same system components.

