The underwater acoustic signal can cause surface wave motion at the water-air interface and hence modulate the magnitude of the laser beam falling on the water surface.

A research was made on detecting underwater acoustic signals using laser.

The laser detection of underwater acoustic signals exploited a laser receiving technique.

Medium and low frequency underwater acoustic signals detecting with laser interferometry

A new method has been developed to detect real-time underwater acoustic signals with laser and a corresponding test system has been built.

A testing installation established by using the proposed method can detect underwater acoustic signals,which verifies the adequacy of relevant theory and simulation process as well as practicability of the method.