Pulsed TV holography combined with computerized tomography (CT) are used to evaluate the three-dimensional distribution of transient acoustic fields in air. Experiments are performed with an electrical discharge between two electrodes as the sound source. Holograms from several directions of the acoustic field are recorded directly onto a CCD detector by use of a double-pulsed ruby laser as the light source. Phase maps, representing projections of the acoustic field, are evaluated quantitatively from the recorded holograms. The projections are used for the CT reconstruction to evaluate the pressure-field distribution in any cross section of the measured volume of air.
© 1998 Optical Society of America
Original Manuscript: April 8, 1997
Revised Manuscript: August 21, 1997
Published: February 10, 1998
Per Gren, Staffan Schedin, and Xide Li, "Tomographic reconstruction of transient acoustic fields recorded by pulsed TV holography," Appl. Opt. 37, 834-840 (1998)