Scanning optical coherence tomography (OCT) is limited in sensitivity and resolution by the restricted focal depth of the confocal detection scheme. Holoscopy, a combination of holography and Fourier-domain full-field OCT, is proposed as a way to detect photons from all depths of a sample volume simultaneously with uniform sensitivity and lateral resolution, even at high NAs. By using the scalar diffraction theory, as frequently applied in digital holographic imaging, we fully reconstruct the object field with depth-invariant imaging quality. In vivo imaging of human skin is demonstrated with an image quality comparable to conventionally scanned OCT.
© 2011 Optical Society of America
Original Manuscript: January 24, 2011
Revised Manuscript: April 22, 2011
Manuscript Accepted: May 12, 2011
Published: June 20, 2011
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics
Dierck Hillmann, Christian Lührs, Tim Bonin, Peter Koch, and Gereon Hüttmann, "Holoscopy—holographic optical coherence tomography," Opt. Lett. 36, 2390-2392 (2011)