Adaptive optics assisted Fourier domain OCT with balanced detection

  • A. Meadway
  • , A. Bradu
  • , M. Hathaway
  • , S. Van Der Jeught
  • , R. B. Rosen
  • , A. Gh Podoleanu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Two factors are of importance to optical coherence tomography (OCT), resolution and sensitivity. Adaptive optics improves the resolution of a system by correcting for aberrations causing distortions in the wave-front. Balanced detection has been used in time domain OCT systems by removing excess photon noise, however it has not been used in Fourier domain systems, as the cameras used in the spectrometers saturated before excess photon noise becomes a problem. Advances in camera technology mean that this is no longer the case and balanced detection can now be used to improve the signal to noise ratio in a Fourier domain (FD) OCT system. An FD-OCT system, enhanced with adaptive optics, is presented and is used to show the improvement that balanced detection can provide. The signal to noise ratios of single camera detection and balanced detection are assessed and in-vivo retinal images are acquired to demonstrate better image quality when using balance detection.

Original languageEnglish
Title of host publicationOptical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV
DOIs
StatePublished - 2011
Externally publishedYes
EventOptical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV - San Francisco, CA, United States
Duration: 24 Jan 201126 Jan 2011

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume7889
ISSN (Print)1605-7422

Conference

ConferenceOptical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XV
Country/TerritoryUnited States
CitySan Francisco, CA
Period24/01/1126/01/11

Keywords

  • Fourier domain
  • OCT
  • Optical coherence tomography
  • adaptive optics
  • balanced detection
  • eye
  • imaging
  • interferometry
  • noise

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