Measurements of acoustic pressure in the non-linear range in water using quantitative schlieren
- 1 January 1994
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3, 1765-1768 vol.3
- https://doi.org/10.1109/ultsym.1994.401932
Abstract
The schlieren method, based on Raman-Nath scattering by ultrasonic waves, is extended to pressures up to 8.8×106 Pa (about 5 KW/cm2 for 4 MHz CW waves) by capturing up to the 16th order diffraction harmonics in water. Given the high spatial resolution (~100 μm); this kind of measurement is not possible with conventional hydrophones. Working under partially applicable Raman-Nath regime (thin grating, Q≈0.016≪2π but 0<ν<2000), the theoretical description fails beyond the first few orders. However, we demonstrate that an empirical calibration is possible as long as plane waves are used and the short interaction length is maintained. Examples of beams and measurements are presented and compared with the basic theoryKeywords
This publication has 5 references indexed in Scilit:
- Quantitative real-time pulsed Schlieren imaging of ultrasonic wavesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Acousto-Optics: What is Behind It?Published by Institute of Electrical and Electronics Engineers (IEEE) ,1986
- Proposed mapping of ultrasonic fields with conventional light diffractionJournal of the Optical Society of America, 1975
- Comparison of an acousto-optic and a radiation force method of measuring ultrasonic powerThe Journal of the Acoustical Society of America, 1975
- Unified Approach to Ultrasonic Light DiffractionIEEE Transactions on Sonics and Ultrasonics, 1967