Vibrations of microspheres probed with ultrashort optical pulses

T. Dehoux; T. A. Kelf; M. Tomoda; O. Matsuda; O. B. Wright; K. Ueno; Y. Nishijima; S. Juodkazis; H. Misawa; V. Tournat; V. E. Gusev

doi:10.1364/OL.34.003740

Vibrations of microspheres probed with ultrashort optical pulses

T. Dehoux, T. A. Kelf, M. Tomoda, O. Matsuda, O. B. Wright, K. Ueno, Y. Nishijima, S. Juodkazis, H. Misawa, V. Tournat, V. E. Gusev

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We use ultrashort optical pulses to excite and detect vibrations of single silica spheres with a diameter of 5 μm placed at the surface of an acoustically mismatched substrate. In addition to the photoelastic detection of picosecond longitudinal acoustic pulses propagating inside the bulk, we detect gigahertz acoustic resonances of the sphere through probe beam defocusing. The mode frequencies are in close accord with those calculated from the elastic vibrations of a free sphere. We also record a resonant enhancement in the amplitude of specific modes of two touching spheres.

Original language	English
Pages (from-to)	3740-3742
Number of pages	3
Journal	Optics Letters
Volume	34
Issue number	23
DOIs	https://doi.org/10.1364/OL.34.003740
Publication status	Published - 1 Dec 2009

Bibliographical note

Erratum can be found in Optics Letters, Volume 35(7), 940,
http://dx.doi.org/10.1364/OL.35.000940

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10.1364/OL.34.003740

Cite this

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abstract = "We use ultrashort optical pulses to excite and detect vibrations of single silica spheres with a diameter of 5 μm placed at the surface of an acoustically mismatched substrate. In addition to the photoelastic detection of picosecond longitudinal acoustic pulses propagating inside the bulk, we detect gigahertz acoustic resonances of the sphere through probe beam defocusing. The mode frequencies are in close accord with those calculated from the elastic vibrations of a free sphere. We also record a resonant enhancement in the amplitude of specific modes of two touching spheres.",

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T1 - Vibrations of microspheres probed with ultrashort optical pulses

AU - Dehoux, T.

AU - Kelf, T. A.

AU - Tomoda, M.

AU - Matsuda, O.

AU - Wright, O. B.

AU - Ueno, K.

AU - Nishijima, Y.

AU - Juodkazis, S.

AU - Misawa, H.

AU - Tournat, V.

AU - Gusev, V. E.

N1 - Erratum can be found in Optics Letters, Volume 35(7), 940, http://dx.doi.org/10.1364/OL.35.000940

PY - 2009/12/1

Y1 - 2009/12/1

N2 - We use ultrashort optical pulses to excite and detect vibrations of single silica spheres with a diameter of 5 μm placed at the surface of an acoustically mismatched substrate. In addition to the photoelastic detection of picosecond longitudinal acoustic pulses propagating inside the bulk, we detect gigahertz acoustic resonances of the sphere through probe beam defocusing. The mode frequencies are in close accord with those calculated from the elastic vibrations of a free sphere. We also record a resonant enhancement in the amplitude of specific modes of two touching spheres.

AB - We use ultrashort optical pulses to excite and detect vibrations of single silica spheres with a diameter of 5 μm placed at the surface of an acoustically mismatched substrate. In addition to the photoelastic detection of picosecond longitudinal acoustic pulses propagating inside the bulk, we detect gigahertz acoustic resonances of the sphere through probe beam defocusing. The mode frequencies are in close accord with those calculated from the elastic vibrations of a free sphere. We also record a resonant enhancement in the amplitude of specific modes of two touching spheres.

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Vibrations of microspheres probed with ultrashort optical pulses

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