1. Picometer scale vibrometry in the human middle ear using a surgical microscope based optical coherence tomography and vibrometry system

    Picometer scale vibrometry in the human middle ear using a surgical microscope based optical coherence tomography and vibrometry system

    We have developed a highly phase stable optical coherence tomography and vibrometry system that attaches directly to the accessory area of a surgical microscope common to both the otology clinic and operating room. Careful attention to minimizing sources of phase noise has enabled a system capable of measuring vibrations of the middle ear with a sensitivity of < 5 pm in an awake human patient. The system is shown to be capable of collecting a wide range of information on the morphology and function of the ear in live subjects, including frequency tuning curves below the hearing threshold, maps of tympanic ...

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