Journal
OPTICS LETTERS
Volume 43, Issue 9, Pages 1966-1969Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.43.001966
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Funding
- National Institutes of Health (NIH) [1R01DC013774, 1R01DC014450]
- U.S. Department of Defense (DOD) [W81XWH-11-2-004]
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A highly phase stable hand-held (HH) endoscopic system has been developed for optical coherence tomography and vibrometry. Designed to transit the ear canal to the middle ear space and peer through the round window (RW), it is capable of imaging the vibratory function of the cochlear soft tissues with subnanometer scale sensitivity. A side-looking, 9 cm long rigid endoscope with a distal diameter of 1.2 mm, was able to fit within the RW niche and provide imaging access. The phase stability was achieved in part by fully integrating a Michelson interferometer into the HH device. Ex vivo imaging of a domestic pig demonstrated the system's ability for functional vibratory imaging of the cochlea via the RW. (C) 2018 Optical Society of America.
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