Acoustic whispering-gallery modes generated and dynamically imaged with ultrashort optical pulses


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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/43062

Title:	Acoustic whispering-gallery modes generated and dynamically imaged with ultrashort optical pulses
Authors:	Tachizaki, Takehiro Browse this author
	Matsuda, Osamu Browse this author →KAKEN DB
	Maznev, Alex A. Browse this author
	Wright, Oliver B. Browse this author
Issue Date:	15-Apr-2010
Publisher:	American Physical Society
Journal Title:	Physical Review B
Volume:	81
Issue:	16
Start Page:	165434
Publisher DOI:	10.1103/PhysRevB.81.165434
Abstract:	Broadband coherent surface phonon wave packets up to 1 GHz in a microscopic embedded disk are excited and dynamically imaged with ultrashort optical pulses. We isolate a whispering-gallery-like mode using a technique involving quadrature detection of the out-of-plane surface motion on modulating the optical excitation beam. The eigenmode distribution is obtained from spatiotemporal Fourier transforms and a radial-azimuthal decomposition demonstrates the selective excitation of a mode with 26-fold rotational symmetry and allows an estimate of the cavity Q factor to be made.
Rights:	©2010 The American Physical Society
Type:	article
URI:	http://hdl.handle.net/2115/43062
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: WRIGHT O. B.

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