Cleary, A. and Veres, I.A. and Thursby, G.J. and McKee, C. and Pierce, S.G. and Culshaw, B. (2009) Coding methods for low power laser generation of ultrasound. In: 2010 Review of Progress in Quantitative Nondestructive Evaluation, 2010-07-26 - 2010-07-31, Kingston, Rhode Island.
Full text not available in this repository. (Request a copy from the Strathclyde author)Abstract
We describe how the application of maximum-length sequence (m-sequence) coding can be used to improve the measured signal-to-noise ratio of ultrasonic waves generated by a low power laser diode. Lamb waves were generated in thin metallic plates using a pulsed excitation. To improve the signal-to-noise ratio of the detected signal, various signal processing methods have been evaluated, with m-sequences described here. We also show how the spectral content of the ultrasonic wave can be controlled by using a modified m-sequence approach
| Item type: | Conference or Workshop Item (Paper) |
|---|---|
| ID code: | 14738 |
| Keywords: | ultrasonic effects , semiconductor lasers , crystal microstructure, signal processing, Electrical engineering. Electronics Nuclear engineering |
| Subjects: | Technology > Electrical engineering. Electronics Nuclear engineering |
| Department: | Faculty of Engineering > Electronic and Electrical Engineering |
| Related URLs: | |
| Depositing user: | Strathprints Administrator |
| Date Deposited: | 16 May 2011 16:03 |
| Last modified: | 04 Oct 2012 17:31 |
| URI: | http://strathprints.strath.ac.uk/id/eprint/14738 |
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