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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 23 — Dec. 1, 2009
  • pp: 3740–3742

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, and V. E. Gusev  »View Author Affiliations


Optics Letters, Vol. 34, Issue 23, pp. 3740-3742 (2009)
http://dx.doi.org/10.1364/OL.34.003740


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Abstract

We use ultrashort optical pulses to excite and detect vibrations of single silica spheres with a diameter of 5 μ m 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.

© 2009 Optical Society of America

OCIS Codes
(110.7170) Imaging systems : Ultrasound
(320.5390) Ultrafast optics : Picosecond phenomena
(110.5125) Imaging systems : Photoacoustics

ToC Category:
Imaging Systems

History
Original Manuscript: July 30, 2009
Manuscript Accepted: October 14, 2009
Published: November 30, 2009

Citation
T. Dehoux, T. A. Kelf, M. Tomoda, O. Matsuda, O. B. Wright, K. Ueno, Y. Nishijima, S. Juodkazis, H. Misawa, V. Tournat, and V. E. Gusev, "Vibrations of microspheres probed with ultrashort optical pulses," Opt. Lett. 34, 3740-3742 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-23-3740

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