Transducer frequency response and impact on TPOAT signal

Deepti Pachauri; Timothy A. Stiles; Namrta Purwar; Prasenjit Dey; S. K. Patch

doi:10.1117/12.763047

28 February 2008 Transducer frequency response and impact on TPOAT signal

Deepti Pachauri, Timothy A. Stiles, Namrta Purwar, Prasenjit Dey, S. K. Patch

Author Affiliations +

Proceedings Volume 6856, Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics; 68561H (2008) https://doi.org/10.1117/12.763047
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

Ideal transducers have perfectly uniform response to incoming pressure waves, regardless of frequency. In practice, piezoelectric transducers are designed with a particular center frequency (CF) and are most sensitive to signals with strong frequency content near CF, bandpass filtering signal - and reconstructed images. We characterized the frequency dependent receive sensitivity of three single-element transducers with CFs ranging from 1 to 3.5 MHz. The resulting sensitivity response curves are applied to ideal thermo/photo/opto-acoustic (TPOAT) signals generated by ideal spherical absorbers to show the impact of transducer frequency response on measured TPOAT data and reconstructed images.

Citation Download Citation

Deepti Pachauri, Timothy A. Stiles, Namrta Purwar, Prasenjit Dey, and S. K. Patch "Transducer frequency response and impact on TPOAT signal", Proc. SPIE 6856, Photons Plus Ultrasound: Imaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 68561H (28 February 2008); https://doi.org/10.1117/12.763047

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE