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Opt Lett. 2012 Aug 1;37(15):3105-7. doi: 10.1364/OL.37.003105.

Full range spectral domain optical coherence tomography using a fiber-optic probe as a self-phase shifter.

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School of Information and Communications, Gwangju Institute of Science and Technology, Buk-gu, Gwangju, South Korea.


We present a full range handheld probe type spectral domain optical coherence tomography (SD-OCT) method. Here, the sample arm is composed of a tilted fiber-optic cantilever scanner; thus, the phase shift concurrently occurs while sample scanning. With the phase shift, we could achieve a full range complex-conjugate-free OCT image with no additional phase shifters in the reference arm. To realize this technique, a magnetically actuated probe was adopted. Full range SD-OCT images of a pearl, human fingernail, and human tooth were subsequently obtained using this suggested probe. The scanning range and acquisition speed were 3 mm and 20 frames/s, respectively.

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