title: Intrasweep phase-sensitive optical coherence tomography for noncontact optical photoacoustic imaging.
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.
authors.affiliation: Group of Biomedical Optics, Center of Medical Physics and Biomedical Engineering, Medical University Vienna, Vienna, Austria.
authors.forename: Cedric
authors.initials: C
authors.lastname: Blatter
authors.forename: Branislav
authors.initials: B
authors.lastname: Grajciar
authors.forename: Pu
authors.initials: P
authors.lastname: Zou
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Wieser
authors.forename: Aart-Jan
authors.initials: AJ
authors.lastname: Verhoef
authors.forename: Robert
authors.initials: R
authors.lastname: Huber
authors.forename: Rainer A
authors.initials: RA
authors.lastname: Leitgeb
mesh_terms: D019047:Phantoms, Imaging; D061088:Photoacoustic Techniques / Q000379:methods*; D041623:Tomography, Optical Coherence / Q000379:methods*