Spectrally encoded extended source optical coherence tomography

Opt Lett. 2014 Dec 15;39(24):6803-6. doi: 10.1364/OL.39.006803.


We have developed an extended source optical coherence tomography (SEES-OCT) technique in an attempt to improve signal strength for ophthalmic imaging. A line illumination with a visual angle of 7.9 mrad is produced by introducing a dispersive element in the infinity space of the sample arm. The maximum permissible exposure (MPE) of such an extended source is 3.1 times larger than that of a "standard" point source OCT, which corresponds to sensitivity improvement of 5 dB. The advantage of SEES-OCT in providing superior penetration depth over a point source system is demonstrated using swine eye tissues ex vivo.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Imaging, Three-Dimensional
  • Optic Disk / cytology
  • Swine
  • Tomography, Optical Coherence / methods*