Bias-sensitive transparent single-element ultrasound transducers using hot-pressed PMN-PT

Mohammad R. Sobhani, Katherine Latham, Jeremy Brown, Roger J. Zemp

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Here we introduce electrostrictive hot-pressed lead magnesium niobate (PMN) with low lead titanate (PT) doping as a candidate transparent transducer material. We fabricate transparent high-frequency single-element transducers and characterize their optical, electrical, and acoustic properties. PMN-PT may offer sensitivity advantages over other transducer materials such as lithium niobate owing to its high electromechanical efficiency and bias-voltage sensitivity. The transparency of the fabricated transducer was measured ∼67% at 532 nm wavelength with a maximum electromechanical coefficient of ∼0.68 with a DC bias level of 100 V. The photoacoustic impulse response showed a center frequency of ∼27.6 MHz with a −6 dB bandwidth of ∼61% at a DC bias level of 40 V. Results demonstrate that the new transparent transducers hold promise for future optical-ultrasonic and photoacoustic imaging applications.

Original languageEnglish
Pages (from-to)2606-2617
Number of pages12
JournalOSA Continuum
Volume4
Issue number10
DOIs
Publication statusPublished - Oct 15 2021

Bibliographical note

Funding Information:
Funding. Mitacs; Natural Sciences and Engineering Research Council of Canada (RGPIN-2018-05788).

Publisher Copyright:
© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

ASJC Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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