"Intrasweep phase-sensitive optical coherence tomography for noncontact optical photoacoustic imaging"Cedric Blatter, Branislav Grajciar, Pu Zou, Wolfgang Wieser, Aart-Jan Verhoef, Robert Huber, and Rainer A. Leitgeb
Optics Letters, Vol. 37, Issue 21, pp. 4368-4370 (2012)
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.
BMO authors (in alphabetic order):
Optical Coherent Ranging and Optical Coherence Tomography (OCT): Imaging and profilometry with rapidly frequency swept laser sources
Fourier Domain Mode Locking (FDML): Spectral mode locking in optics and applications