Blum, Thomas E.Van Wijk, KasperPouet, BrunoWartelle, Alexis2015-10-302015-10-302015-10-30201010.1063/1.3455213https://infoscience.epfl.ch/handle/20.500.14299/120197The in-plane component of the wavefield provides valuable information about media properties from seismology to nondestructive testing. A new compact scanning laser ultrasonic interferometer collects light scattered away from the angle of incidence to provide the absolute ultrasonic displacement for both the out-of-plane and an in-plane components. This new system is tested by measuring the radial and vertical polarization of a Rayleigh wave in an aluminum half-space. The estimated amplitude ratio of the horizontal and vertical displacement agrees well with the theoretical value. The phase difference exhibits a small bias between the two components due to a slightly different frequency response between the two processing channels of the prototype electronic circuitry. © 2010 American Institute of Physics.text::journal::journal article::research article