In this paper, an optical sensor capable of measuring pressure and the three orthogonal particle velocities at a point is presented. This sensor can be used to measure three-dimensional sound intensity or energy density in the presence of strong electro-magnetic and radio-frequency fields. The benefits of the sensor compared to traditional p-p intensity probes is discussed, as well as the design, construction and performance of the sensor. It will be seen that this new type of sensor has many advantages compared to traditional sensors.Cazzolato, B. S., Halim, D., Petersen, D., Kahana, Y. and Kots, A.http://www.mecheng.adelaide.edu.au/anvc/abstract.php?abstract=33
