2D optoacoustic array for high resolution imaging

S. Ashkenazi, Russell S Witte, K. Kim, S. W. Huang, Y. Hou, M. O'Donnell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

An optoacoustic detector denotes the detection of acoustic signals by optical devices. Recent advances in fabrication techniques and the availability of high power tunable laser sources have greatly accelerated the development of efficient optoacoustic detectors. The unique advantages of optoacoustic technology are of special interest in applications that require high resolution imaging. For these applications optoacoustic technology enables high frequency transducer arrays with element size on the order of 10 μm. Laser generated ultrasound (photoacoustic effect) has been studied since the early observations of A.G. Bell (1880) of audible sound generated by light absorption1. Modern studies have demonstrated the use of the photoacoustic effect to form a versatile imaging modality for medical and biological applications. A short laser pulse illuminates a tissue creating rapid thermal expansion and acoustic emission. Detection of the resulting acoustic field by an array enables the imaging of the tissue optical absorption using ultrasonic imaging methods. We present an integrated imaging system that employs photoacoustic sound generation and 2D optoacoustic reception. The optoacoustic receiver consists of a thin polymer Fabry-Perot etalon. The etalon is an optical resonator of a high quality factor (Q = 750). The relatively low elasticity modulus of the polymer and the high Q-factor of the resonator combine to yield high ultrasound sensitivity. The etalon thickness (10 μm) was optimized for wide bandwidth (typically above 50 MHz). An optical scanning and focusing system is used to create a large aperture and high density 2D ultrasonic receiver array. High resolution 3D images of phantom targets and biological tissue samples were obtained.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6086
DOIs
StatePublished - 2006
Externally publishedYes
Event7th Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics - Photons Plus Ultrasound: Imaging and Sensing 2006 - San Jose, CA, United States
Duration: Jan 22 2006Jan 26 2006

Other

Other7th Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics - Photons Plus Ultrasound: Imaging and Sensing 2006
CountryUnited States
CitySan Jose, CA
Period1/22/061/26/06

Fingerprint

Photoacoustic effect
Imaging techniques
Q factors
acoustics
high resolution
receivers
ultrasonics
optical resonators
detectors
polymers
acoustic emission
tunable lasers
Ultrasonics
bells
high power lasers
Tissue
lasers
availability
thermal expansion
modulus of elasticity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Ashkenazi, S., Witte, R. S., Kim, K., Huang, S. W., Hou, Y., & O'Donnell, M. (2006). 2D optoacoustic array for high resolution imaging. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6086). [60861H] https://doi.org/10.1117/12.645543

2D optoacoustic array for high resolution imaging. / Ashkenazi, S.; Witte, Russell S; Kim, K.; Huang, S. W.; Hou, Y.; O'Donnell, M.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6086 2006. 60861H.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ashkenazi, S, Witte, RS, Kim, K, Huang, SW, Hou, Y & O'Donnell, M 2006, 2D optoacoustic array for high resolution imaging. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6086, 60861H, 7th Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics - Photons Plus Ultrasound: Imaging and Sensing 2006, San Jose, CA, United States, 1/22/06. https://doi.org/10.1117/12.645543
Ashkenazi S, Witte RS, Kim K, Huang SW, Hou Y, O'Donnell M. 2D optoacoustic array for high resolution imaging. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6086. 2006. 60861H https://doi.org/10.1117/12.645543
Ashkenazi, S. ; Witte, Russell S ; Kim, K. ; Huang, S. W. ; Hou, Y. ; O'Donnell, M. / 2D optoacoustic array for high resolution imaging. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6086 2006.
@inproceedings{e1155a5e130f415186eb84f8eaa0eb91,
title = "2D optoacoustic array for high resolution imaging",
abstract = "An optoacoustic detector denotes the detection of acoustic signals by optical devices. Recent advances in fabrication techniques and the availability of high power tunable laser sources have greatly accelerated the development of efficient optoacoustic detectors. The unique advantages of optoacoustic technology are of special interest in applications that require high resolution imaging. For these applications optoacoustic technology enables high frequency transducer arrays with element size on the order of 10 μm. Laser generated ultrasound (photoacoustic effect) has been studied since the early observations of A.G. Bell (1880) of audible sound generated by light absorption1. Modern studies have demonstrated the use of the photoacoustic effect to form a versatile imaging modality for medical and biological applications. A short laser pulse illuminates a tissue creating rapid thermal expansion and acoustic emission. Detection of the resulting acoustic field by an array enables the imaging of the tissue optical absorption using ultrasonic imaging methods. We present an integrated imaging system that employs photoacoustic sound generation and 2D optoacoustic reception. The optoacoustic receiver consists of a thin polymer Fabry-Perot etalon. The etalon is an optical resonator of a high quality factor (Q = 750). The relatively low elasticity modulus of the polymer and the high Q-factor of the resonator combine to yield high ultrasound sensitivity. The etalon thickness (10 μm) was optimized for wide bandwidth (typically above 50 MHz). An optical scanning and focusing system is used to create a large aperture and high density 2D ultrasonic receiver array. High resolution 3D images of phantom targets and biological tissue samples were obtained.",
author = "S. Ashkenazi and Witte, {Russell S} and K. Kim and Huang, {S. W.} and Y. Hou and M. O'Donnell",
year = "2006",
doi = "10.1117/12.645543",
language = "English (US)",
isbn = "0819461288",
volume = "6086",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - 2D optoacoustic array for high resolution imaging

AU - Ashkenazi, S.

AU - Witte, Russell S

AU - Kim, K.

AU - Huang, S. W.

AU - Hou, Y.

AU - O'Donnell, M.

PY - 2006

Y1 - 2006

N2 - An optoacoustic detector denotes the detection of acoustic signals by optical devices. Recent advances in fabrication techniques and the availability of high power tunable laser sources have greatly accelerated the development of efficient optoacoustic detectors. The unique advantages of optoacoustic technology are of special interest in applications that require high resolution imaging. For these applications optoacoustic technology enables high frequency transducer arrays with element size on the order of 10 μm. Laser generated ultrasound (photoacoustic effect) has been studied since the early observations of A.G. Bell (1880) of audible sound generated by light absorption1. Modern studies have demonstrated the use of the photoacoustic effect to form a versatile imaging modality for medical and biological applications. A short laser pulse illuminates a tissue creating rapid thermal expansion and acoustic emission. Detection of the resulting acoustic field by an array enables the imaging of the tissue optical absorption using ultrasonic imaging methods. We present an integrated imaging system that employs photoacoustic sound generation and 2D optoacoustic reception. The optoacoustic receiver consists of a thin polymer Fabry-Perot etalon. The etalon is an optical resonator of a high quality factor (Q = 750). The relatively low elasticity modulus of the polymer and the high Q-factor of the resonator combine to yield high ultrasound sensitivity. The etalon thickness (10 μm) was optimized for wide bandwidth (typically above 50 MHz). An optical scanning and focusing system is used to create a large aperture and high density 2D ultrasonic receiver array. High resolution 3D images of phantom targets and biological tissue samples were obtained.

AB - An optoacoustic detector denotes the detection of acoustic signals by optical devices. Recent advances in fabrication techniques and the availability of high power tunable laser sources have greatly accelerated the development of efficient optoacoustic detectors. The unique advantages of optoacoustic technology are of special interest in applications that require high resolution imaging. For these applications optoacoustic technology enables high frequency transducer arrays with element size on the order of 10 μm. Laser generated ultrasound (photoacoustic effect) has been studied since the early observations of A.G. Bell (1880) of audible sound generated by light absorption1. Modern studies have demonstrated the use of the photoacoustic effect to form a versatile imaging modality for medical and biological applications. A short laser pulse illuminates a tissue creating rapid thermal expansion and acoustic emission. Detection of the resulting acoustic field by an array enables the imaging of the tissue optical absorption using ultrasonic imaging methods. We present an integrated imaging system that employs photoacoustic sound generation and 2D optoacoustic reception. The optoacoustic receiver consists of a thin polymer Fabry-Perot etalon. The etalon is an optical resonator of a high quality factor (Q = 750). The relatively low elasticity modulus of the polymer and the high Q-factor of the resonator combine to yield high ultrasound sensitivity. The etalon thickness (10 μm) was optimized for wide bandwidth (typically above 50 MHz). An optical scanning and focusing system is used to create a large aperture and high density 2D ultrasonic receiver array. High resolution 3D images of phantom targets and biological tissue samples were obtained.

UR - http://www.scopus.com/inward/record.url?scp=33646166984&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646166984&partnerID=8YFLogxK

U2 - 10.1117/12.645543

DO - 10.1117/12.645543

M3 - Conference contribution

AN - SCOPUS:33646166984

SN - 0819461288

SN - 9780819461285

VL - 6086

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -