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Generation of ultrasound in materials using continuous-wave lasers |
Optics Letters, Vol. 37, Issue 5, pp. 830-832 (2012)
http://dx.doi.org/10.1364/OL.37.000830
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Abstract
Generating and detecting ultrasound is a standard method of nondestructive evaluation of materials. Pulsed lasers are used to generate ultrasound remotely in situations that prohibit the use of contact transducers. The scanning rate is limited by the repetition rates of the pulsed lasers, ranging between 10 and 100 Hz for lasers with sufficient pulse widths and energies. Alternately, a high-power continuous-wave laser can be scanned across the surface, creating an ultrasonic wavefront. Since generation is continuous, the scanning rate can be as much as 4 orders of magnitude higher than with pulsed lasers. This paper introduces the concept, comparing the theoretical scanning speed with generation by pulsed laser.
© 2012 Optical Society of America
OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(280.3375) Remote sensing and sensors : Laser induced ultrasonics
(140.3615) Lasers and laser optics : Lasers, ytterbium
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: November 7, 2011
Manuscript Accepted: January 7, 2012
Published: February 22, 2012
Virtual Issues
Vol. 7, Iss. 5 Virtual Journal for Biomedical Optics
Citation
James N. Caron, Gregory P. DiComo, and Sergei Nikitin, "Generation of ultrasound in materials using continuous-wave lasers," Opt. Lett. 37, 830-832 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-37-5-830
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