Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Ultrahigh-sensitivity wideband Fabry-Perot ultrasound sensors as an alternative to piezoelectric PVDF transducers for biomedical photoacoustic detection

[+] Author Affiliations
Edward Z. Y. Zhang, Paul C. Beard

Univ. College London (United Kingdom)

Proc. SPIE 5320, Photons Plus Ultrasound: Imaging and Sensing, 222 (July 12, 2004); doi:10.1117/12.531160
Text Size: A A A
From Conference Volume 5320

  • Photons Plus Ultrasound: Imaging and Sensing
  • Alexander A. Oraevsky; Lihong V. Wang
  • San Jose, CA | January 24, 2004

abstract

A high sensitivity, wideband ultrasound sensor based on a high finesse Fabry-Perot (FP) polymer film interferometer has been demonstrated with a bandwidth of 20 MHz and a 50μm diameter active area. Used in conjunction with a balanced photodetector to enable the use of a high intensity interrogating light beam of up to 36mW, the sensor system provided a noise equivalent pressure (NEP) of 0.35kPa over a 20 MHz measured bandwidth. It is shown further that this NEP could, in principle, be reduced to 0.16 kPa by using an interrogating source with a wider wavelength tuning range than was available in the current study to track drift in the phase bias of the FP sensor. The sensitivity achieved is an order of magnitude higher than previously demonstrated with this type of sensors, and is comparable to that of a 1mm diameter PVDF element. The combination of high sensitivity and the small active area (<50μm diameter) makes the FP sensor scheme particularly suitable for photoacoustic imaging applications.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Edward Z. Y. Zhang and Paul C. Beard
"Ultrahigh-sensitivity wideband Fabry-Perot ultrasound sensors as an alternative to piezoelectric PVDF transducers for biomedical photoacoustic detection", Proc. SPIE 5320, Photons Plus Ultrasound: Imaging and Sensing, 222 (July 12, 2004); doi:10.1117/12.531160; http://dx.doi.org/10.1117/12.531160


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.