A Study of Interaction of Ultrasonic and Optical Wave in Optical Fiber Using the Air Gap

There exist some possibilities for simultaneous delivery of laser radiation and
ultrasounds of low frequency and high intensity: introducing ultrasound oscillations
in the optical fiber by the rigid connection of the fiber to the vibrating element
and non-contact influence of the ultrasonic wave on the laser beam. The article
presents the results of Matlab simulations and experimental studies of influence of
the ultrasonic wave on the laser beam. A role of the air gap, and its influence on laser-
ultrasonic transmission in optical fiber was examined. Advantages and disadvantages
of both solutions of interaction of ultrasonic and optical waves in, e.g., surgical
applications are discussed.