@inproceedings{490ec4bba7644b1e8f444cf93a99ed99,
title = "Accurate optical measurement of surface acoustic wave phase velocity",
abstract = "A high-resolution technique for the optical detection of the phase and amplitude of high frequency surface acoustic waves (SAW's) is presented. The test setup incorporates a mode-locked picosecond laser, harmonic mixing, and coherent detection, and it allows not only the measurement of the surface wave field but also the direct determination of the phase velocity. A measurement bandwidth in excess of 2 GHz is achieved. The maximum scan length was 4 cm. As a substrate, LiNbO3 has been used for the test measurements. Minimum detectable surface displacement and dynamic range were 1 pm/Hz1/2 and 40 dB, respectively. The method enables the determination of the phase velocity with a resolution of 1.5·10-5 in dependence of crystal cut, temperature and frequency.",
author = "R. Weigel and A. Holm and P. Russer and W. Ruile and G. Soelkner",
year = "1993",
language = "English",
isbn = "0780312783",
series = "Proceedings of the IEEE Ultrasonics Symposium",
publisher = "Publ by IEEE",
pages = "319--322",
editor = "M. Levy and B.R. McAvoy",
booktitle = "Proceedings of the IEEE Ultrasonics Symposium",
note = "Proceedings of the IEEE 1993 Ultrasonics Symposium. Part 1 (of 2) ; Conference date: 31-10-1993 Through 03-11-1993",
}