Real-time imaging of acoustic waves on a bulk acoustic resonator | Zendy

Takashi Fujikura | Zendy; Osamu Matsuda | Zendy; Dieter M. Profunser | Zendy; Oliver B. Wright | Zendy; Jérémy Masson | Zendy; Sylvain Ballandras | Zendy

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Real-time imaging of acoustic waves on a bulk acoustic resonator

Author(s) -

Takashi Fujikura,

Osamu Matsuda,

Dieter M. Profunser,

Oliver B. Wright,

Jérémy Masson,

Sylvain Ballandras

Publication year - 2008

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3053074

Subject(s) - acoustic dispersion , acoustic wave , resonator , optics , materials science , dispersion (optics) , acoustic interferometer , physical acoustics , laser , acoustics , ultrashort pulse , surface acoustic wave , physics , longitudinal wave , wave propagation , mechanical wave

International audienceTime resolved images of acoustic waves in the 100 MHz-2.2 GHz range are obtained for an electrically excited thin-film bulk acoustic wave resonator by means of an ultrafast optical technique. Electrical pulses, synchronized to ultrashort laser pulses, piezoelectrically excite the device, and synchronous near-infrared laser pulses interferometrically detect surface motion. The frequency dispersion is extracted using spatiotemporal Fourier transforms, revealing both longitudinal and surface acoustic modes

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