Recently, researchers from the University of Tokyo have developed a new optical device that utilizes Fabry-Perot based phase demodulation for heterodyne light-induced acoustic wave sensing. This breakthrough technology could revolutionize the way we are able to detect acoustic waves, and could have a wide range of applications in fields such as medical diagnostics and industrial sensing.

The new device uses Fabry-Perot based phase demodulation, which allows for the detection of acoustic waves (sound) using light. This technology is able to measure acoustic signals with extremely high precision and sensitivity, even in environments with high levels of background noise. Additionally, the device can detect acoustic signals from a wide range of frequencies, from very low frequencies to ultrasonic frequencies. This makes the device extremely versatile, and could allow for its use in a variety of sensing applications.

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source: Phys.org