Figure 1
From: Acoustic stimulation of the human round window by laser-induced nonlinear optoacoustics
Left: Laser setup with half wave plate (λ/2), polarizing beam splitter (PBS), beam dump (BD), three-axis translation stage (xyz), temporal bone (TB) in which the two pressure sensors were placed inside the scala vestibuli and scala tympani, connection to the signal conditioner (AMP), to the input/output device (I/O) and to the computer (PC). The computer also creates the modulated signal (IPDM) as a digital pulse train that is passed onto a digital-analog converter (DAC). The analog signal controls the laser. Right: End of fiber with two ball lenses (BL) glued into a ferrule with optical adhesive and gel placed at the laser focus site. The tip of the gel is in direct contact with the round window membrane of the cochlea.
