Observation of wedge waves and their mode transformation by laser ultrasonic technique
Chinese Optics Letters, Vol. 9, Issue 2, pp. 022501- (2011)
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Abstract
Wedge waves (WWs) in wedges, including their dispersion characteristics and mode transformation, are investigated using the laser ultrasound technique. Pulsed laser excitation and optical deflection beam method for detection are used to record WWs. Numerous WWs are detected by scanning the excitation laser along the wedge tip. Dispersions of WWs are obtained by using the two-dimensional (2D) Fourier transformation method, and different WW orders are revealed on the wedges. Mode transformation is determined by fixing the distance between the excitation and detection position, as well as by scanning the samples along the normal direction of the wedge tip.
© 2011 Chinese Optics Letters
OCIS Codes
(250.5530) Optoelectronics : Pulse propagation and temporal solitons
(350.0350) Other areas of optics : Other areas of optics
(350.7420) Other areas of optics : Waves
Citation
Jing Jia, Zhonghua Shen, Lijuan Wang, and Ling Yuan, "Observation of wedge waves and their mode transformation by laser ultrasonic
technique," Chin. Opt. Lett. 9, 022501- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-2-022501
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