The role of electrostriction in the generation of acoustic waves by optical forces in water

N. G.C. Astrath; B. Anghinoni; G. A.S. Flizikowski; V. S. Zanuto; L. C. Malacarne; M. L. Baesso; T. Požar; D. Razansky

doi:10.1016/j.pacs.2022.100445

The role of electrostriction in the generation of acoustic waves by optical forces in water

N. G.C. Astrath
, B. Anghinoni
, G. A.S. Flizikowski
, V. S. Zanuto
, L. C. Malacarne
, M. L. Baesso
, T. Požar
, D. Razansky

Universidade Estadual de Maringá
Univ. of Ljubljana
University of Zurich
ETH Zürich

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

10 Scopus citations

Abstract

We present semi-analytical solutions describing the spatiotemporal distributions of temperature and pressure inside low-absorbing dielectrics excited by tightly focused laser beams. These solutions are compared to measurements in water associated with variations of the local refractive index due to acoustic waves generated by electrostriction, heat deposition, and the Kerr effect at different temperatures. The experimental results exhibited an excellent agreement with the modeling predictions, with electrostriction being the dominant transient effect in the acoustic wave generation. Measurements at 4.0^∘C show that the thermoelastic contribution to the optical signal is significantly reduced due to the low thermal expansion coefficient of water at this temperature.

Original language	English
Article number	100445
Journal	Photoacoustics
Volume	29
DOIs	https://doi.org/10.1016/j.pacs.2022.100445
State	Published - Feb 2023
Externally published	Yes

Keywords

Electrostriction
Kerr lens
Photo-induced lensing effect
Pressure-transients
Radiation forces

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10.1016/j.pacs.2022.100445

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title = "The role of electrostriction in the generation of acoustic waves by optical forces in water",

abstract = "We present semi-analytical solutions describing the spatiotemporal distributions of temperature and pressure inside low-absorbing dielectrics excited by tightly focused laser beams. These solutions are compared to measurements in water associated with variations of the local refractive index due to acoustic waves generated by electrostriction, heat deposition, and the Kerr effect at different temperatures. The experimental results exhibited an excellent agreement with the modeling predictions, with electrostriction being the dominant transient effect in the acoustic wave generation. Measurements at 4.0∘C show that the thermoelastic contribution to the optical signal is significantly reduced due to the low thermal expansion coefficient of water at this temperature.",

keywords = "Electrostriction, Kerr lens, Photo-induced lensing effect, Pressure-transients, Radiation forces",

author = "Astrath, \{N. G.C.\} and B. Anghinoni and Flizikowski, \{G. A.S.\} and Zanuto, \{V. S.\} and Malacarne, \{L. C.\} and Baesso, \{M. L.\} and T. Po{\v z}ar and D. Razansky",

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year = "2023",

month = feb,

doi = "10.1016/j.pacs.2022.100445",

language = "English",

volume = "29",

journal = "Photoacoustics",

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TY - JOUR

T1 - The role of electrostriction in the generation of acoustic waves by optical forces in water

AU - Astrath, N. G.C.

AU - Anghinoni, B.

AU - Flizikowski, G. A.S.

AU - Zanuto, V. S.

AU - Malacarne, L. C.

AU - Baesso, M. L.

AU - Požar, T.

AU - Razansky, D.

PY - 2023/2

Y1 - 2023/2

N2 - We present semi-analytical solutions describing the spatiotemporal distributions of temperature and pressure inside low-absorbing dielectrics excited by tightly focused laser beams. These solutions are compared to measurements in water associated with variations of the local refractive index due to acoustic waves generated by electrostriction, heat deposition, and the Kerr effect at different temperatures. The experimental results exhibited an excellent agreement with the modeling predictions, with electrostriction being the dominant transient effect in the acoustic wave generation. Measurements at 4.0∘C show that the thermoelastic contribution to the optical signal is significantly reduced due to the low thermal expansion coefficient of water at this temperature.

AB - We present semi-analytical solutions describing the spatiotemporal distributions of temperature and pressure inside low-absorbing dielectrics excited by tightly focused laser beams. These solutions are compared to measurements in water associated with variations of the local refractive index due to acoustic waves generated by electrostriction, heat deposition, and the Kerr effect at different temperatures. The experimental results exhibited an excellent agreement with the modeling predictions, with electrostriction being the dominant transient effect in the acoustic wave generation. Measurements at 4.0∘C show that the thermoelastic contribution to the optical signal is significantly reduced due to the low thermal expansion coefficient of water at this temperature.

KW - Electrostriction

KW - Kerr lens

KW - Photo-induced lensing effect

KW - Pressure-transients

KW - Radiation forces

UR - https://www.scopus.com/pages/publications/85149765671

U2 - 10.1016/j.pacs.2022.100445

DO - 10.1016/j.pacs.2022.100445

M3 - Article

AN - SCOPUS:85149765671

SN - 2213-5979

VL - 29

JO - Photoacoustics

JF - Photoacoustics

M1 - 100445

ER -

The role of electrostriction in the generation of acoustic waves by optical forces in water

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Keywords

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