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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 7 — Mar. 1, 2009
  • pp: C38–C45

Acoustic signals generated by laser-irradiated metal nanoparticles

Sergey Egerev, Sergey Ermilov, Oleg Ovchinnikov, Andrey Fokin, Dmitry Guzatov, Vasily Klimov, Andrey Kanavin, and Alexander Oraevsky  »View Author Affiliations


Applied Optics, Vol. 48, Issue 7, pp. C38-C45 (2009)
http://dx.doi.org/10.1364/AO.48.000C38


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Abstract

We present a physical model that explains several sequential stages of the conversion of optical to acoustical energy when irradiating diluted suspensions of metal nanoparticles with laser pulses. Optical absorption and scattering of a single particle driven by plasmon resonance interactions in an aqueous medium are considered. Thermal effects produced by laser-irradiated nanoparticles, dynamics of vapor bubble formation, and acoustic signals from expanding bubbles formed around heated nanoparticles are calculated. Stochastic features of the pressure magnitude emitted as a result of low-fluence irradiation of suspensions are also discussed. The probabilistic distribution of pressure magnitude from individual bubbles was found to obey Zipf’s law for low concentrations of nanoparticles, while increasing their concentration brings the pressure magnitude distribution into conformance with the Gaussian law.

© 2008 Optical Society of America

OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(170.1610) Medical optics and biotechnology : Clinical applications
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.7170) Medical optics and biotechnology : Ultrasound
(190.4870) Nonlinear optics : Photothermal effects

History
Original Manuscript: August 13, 2008
Manuscript Accepted: September 29, 2008
Published: November 12, 2008

Virtual Issues
Vol. 4, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Sergey Egerev, Sergey Ermilov, Oleg Ovchinnikov, Andrey Fokin, Dmitry Guzatov, Vasily Klimov, Andrey Kanavin, and Alexander Oraevsky, "Acoustic signals generated by laser-irradiated metal nanoparticles," Appl. Opt. 48, C38-C45 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-7-C38

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