Abstract
This paper describes a method for using a pulsed laser and specialized low cost beam-shaping optics to launch complex acoustic waveforms with user- definable geometries; diffraction of a continuous wave probe laser from these waveforms reveals their temporal evolution in real time. Methods are introduced for designing and fabricating simple binary phase optics for beam- shaping that is useful for high-frequency measurements on thin films. Experiments on films of platinum on silicon demonstrate the approach.
Original language | English (US) |
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Pages (from-to) | 2807-2813 |
Number of pages | 7 |
Journal | journal of the Acoustical Society of America |
Volume | 104 |
Issue number | 5 |
DOIs | |
State | Published - Nov 1998 |
ASJC Scopus subject areas
- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics