Spectrally encoded extended source optical coherence tomography.


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.

DOI: 10.1364/OL.39.006803

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@article{Liu2014SpectrallyEE, title={Spectrally encoded extended source optical coherence tomography.}, author={Xinyu Liu and Xiaojun Yu and Hongying Tang and Dongyao Cui and Meghna R Beotra and Michael A. Girard and Ding Sun and Jun Gu and Linbo Liu}, journal={Optics letters}, year={2014}, volume={39 24}, pages={6803-6} }