Spectrally encoded extended source optical coherence tomography
Beotra, Meghna R.
Girard, Michael J. A.
Date of Issue2014
School of Electrical and Electronic Engineering
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.
DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
© 2014 Optical Society of America. This is the author created version of a work that has been peer reviewed and accepted for publication by Optics Letters, Optical Society of America. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1364/OL.39.006803].