Abstract
In order to analyze the acoustic field of ultrasonic
transducers used for medical diagnostic purposes the optical
diffraction patterns due to the propagating pressure waves in
water are optically analyzed through ultra short laser pulses
diffracted by the acoustic waves. The diffracted laser light is
optically preprocessed (filtered) in the Fourierplane of an optical
system and projected onto a CCDcamera. Using this technique
it is possible to measure and characterize the ultrasoundfield in
a rather short time interval, which would otherwise last hours or
days using the standard method of measuring the intensity in a
large number of points in three dimensions with a hydrophone.
Additionally the phaseinformation of the ultrasonic wave is
acquired easily that way.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Conference on Systems, Signals and Devices |
| Number of pages | 5 |
| Publication status | Published - 2007 |
Fields of science
- 101014 Numerical mathematics
- 102003 Image processing
- 103021 Optics
- 202 Electrical Engineering, Electronics, Information Engineering
- 202012 Electrical measurement technology
- 202014 Electromagnetism
- 202015 Electronics
- 202016 Electrical engineering
- 202021 Industrial electronics
- 202022 Information technology
- 202024 Laser technology
- 202027 Mechatronics
- 202036 Sensor systems
- 202037 Signal processing
- 202039 Theoretical electrical engineering
- 203016 Measurement engineering
- 211908 Energy research