Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging

Dylan M. Marques; Oliver Sheppard; Edward Z. Zhang; Paul C. Beard; Peter R.T. Munro; James A. Guggenheim

doi:10.1117/12.2675686

Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging

Dylan M. Marques
, Oliver Sheppard
, Edward Z. Zhang
, Paul C. Beard
, Peter R.T. Munro
, James A. Guggenheim

Cardiovascular Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Photoacoustic Tomography (PAT) systems based on Fabry-Perot (FP) sensors provide high-resolution images limited by the system’s sensitivity. The sensitivity is limited by the optical Q-factor of the FP cavity (i.e., the optical confinement of the interrogation laser beam in the FP cavity). In existing systems, a focussed Gaussian beam is used to interrogate the sensor. While providing a small acoustic element required for high-resolution imaging, this interrogation beam naturally diverges inside the FP cavity, leading to the current sensitivity limit. To break this limit, a new approach of interrogating the FP sensor using a Bessel beam is investigated. The Noise Equivalent Pressure (NEP) and both axial and lateral PAT resolutions using Bessel beam interrogation were quantified. Bessel beam interrogation provided lower NEP, similar axial resolution, but lower lateral resolution. Thus, Bessel beam might be an alternative interrogation scheme for deep PAT imaging as high sensitivity is needed and the lateral resolution is limited by the aperture of the PAT system.

Original language	English
Title of host publication	Opto-Acoustic Methods and Applications in Biophotonics VI
Editors	Chulhong Kim, Jan Laufer, Vasilis Ntziachristos, Roger J. Zemp
Publisher	SPIE
Number of pages	3
ISBN (Electronic)	9781510664722
ISBN (Print)	9781510664715
DOIs	https://doi.org/10.1117/12.2675686
Publication status	Published - 11 Aug 2023
Event	2023 European Conference on Biomedical Optics - International Congress Center München, Munich, Germany Duration: 25 Jun 2023 → 29 Jun 2023

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Publisher	Society of Photo-Optical Instrumentation Engineers
Volume	12631
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	2023 European Conference on Biomedical Optics
Abbreviated title	ECBO 2023
Country/Territory	Germany
City	Munich
Period	25/06/23 → 29/06/23

Bibliographical note

Publisher Copyright:
© 2023 SPIE.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Biomedical Engineering
Atomic and Molecular Physics, and Optics

Access to Document

10.1117/12.2675686Licence: None: All rights reserved

https://discovery.ucl.ac.uk/id/eprint/10178714Licence: None: All rights reserved

Cite this

Marques, D. M., Sheppard, O., Zhang, E. Z., Beard, P. C., Munro, P. R. T., & Guggenheim, J. A. (2023). Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging. In C. Kim, J. Laufer, V. Ntziachristos, & R. J. Zemp (Eds.), Opto-Acoustic Methods and Applications in Biophotonics VI Article 126310U (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12631). SPIE. https://doi.org/10.1117/12.2675686

Marques, Dylan M. ; Sheppard, Oliver ; Zhang, Edward Z. et al. / Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging. Opto-Acoustic Methods and Applications in Biophotonics VI. editor / Chulhong Kim ; Jan Laufer ; Vasilis Ntziachristos ; Roger J. Zemp. SPIE, 2023. (Proceedings of SPIE - The International Society for Optical Engineering).

@inproceedings{498724de1e9d4a98a0e7fb5463fe2474,

title = "Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging",

abstract = "Photoacoustic Tomography (PAT) systems based on Fabry-Perot (FP) sensors provide high-resolution images limited by the system{\textquoteright}s sensitivity. The sensitivity is limited by the optical Q-factor of the FP cavity (i.e., the optical confinement of the interrogation laser beam in the FP cavity). In existing systems, a focussed Gaussian beam is used to interrogate the sensor. While providing a small acoustic element required for high-resolution imaging, this interrogation beam naturally diverges inside the FP cavity, leading to the current sensitivity limit. To break this limit, a new approach of interrogating the FP sensor using a Bessel beam is investigated. The Noise Equivalent Pressure (NEP) and both axial and lateral PAT resolutions using Bessel beam interrogation were quantified. Bessel beam interrogation provided lower NEP, similar axial resolution, but lower lateral resolution. Thus, Bessel beam might be an alternative interrogation scheme for deep PAT imaging as high sensitivity is needed and the lateral resolution is limited by the aperture of the PAT system.",

author = "Marques, \{Dylan M.\} and Oliver Sheppard and Zhang, \{Edward Z.\} and Beard, \{Paul C.\} and Munro, \{Peter R.T.\} and Guggenheim, \{James A.\}",

note = "Publisher Copyright: {\textcopyright} 2023 SPIE.; 2023 European Conference on Biomedical Optics, ECBO 2023 ; Conference date: 25-06-2023 Through 29-06-2023",

year = "2023",

month = aug,

day = "11",

doi = "10.1117/12.2675686",

language = "English",

isbn = "9781510664715",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Chulhong Kim and Jan Laufer and Vasilis Ntziachristos and Zemp, \{Roger J.\}",

booktitle = "Opto-Acoustic Methods and Applications in Biophotonics VI",

}

Marques, DM, Sheppard, O, Zhang, EZ, Beard, PC, Munro, PRT & Guggenheim, JA 2023, Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging. in C Kim, J Laufer, V Ntziachristos & RJ Zemp (eds), Opto-Acoustic Methods and Applications in Biophotonics VI., 126310U, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12631, SPIE, 2023 European Conference on Biomedical Optics, Munich, Germany, 25/06/23. https://doi.org/10.1117/12.2675686

Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging. / Marques, Dylan M.; Sheppard, Oliver; Zhang, Edward Z. et al.
Opto-Acoustic Methods and Applications in Biophotonics VI. ed. / Chulhong Kim; Jan Laufer; Vasilis Ntziachristos; Roger J. Zemp. SPIE, 2023. 126310U (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12631).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging

AU - Marques, Dylan M.

AU - Sheppard, Oliver

AU - Zhang, Edward Z.

AU - Beard, Paul C.

AU - Munro, Peter R.T.

AU - Guggenheim, James A.

PY - 2023/8/11

Y1 - 2023/8/11

N2 - Photoacoustic Tomography (PAT) systems based on Fabry-Perot (FP) sensors provide high-resolution images limited by the system’s sensitivity. The sensitivity is limited by the optical Q-factor of the FP cavity (i.e., the optical confinement of the interrogation laser beam in the FP cavity). In existing systems, a focussed Gaussian beam is used to interrogate the sensor. While providing a small acoustic element required for high-resolution imaging, this interrogation beam naturally diverges inside the FP cavity, leading to the current sensitivity limit. To break this limit, a new approach of interrogating the FP sensor using a Bessel beam is investigated. The Noise Equivalent Pressure (NEP) and both axial and lateral PAT resolutions using Bessel beam interrogation were quantified. Bessel beam interrogation provided lower NEP, similar axial resolution, but lower lateral resolution. Thus, Bessel beam might be an alternative interrogation scheme for deep PAT imaging as high sensitivity is needed and the lateral resolution is limited by the aperture of the PAT system.

AB - Photoacoustic Tomography (PAT) systems based on Fabry-Perot (FP) sensors provide high-resolution images limited by the system’s sensitivity. The sensitivity is limited by the optical Q-factor of the FP cavity (i.e., the optical confinement of the interrogation laser beam in the FP cavity). In existing systems, a focussed Gaussian beam is used to interrogate the sensor. While providing a small acoustic element required for high-resolution imaging, this interrogation beam naturally diverges inside the FP cavity, leading to the current sensitivity limit. To break this limit, a new approach of interrogating the FP sensor using a Bessel beam is investigated. The Noise Equivalent Pressure (NEP) and both axial and lateral PAT resolutions using Bessel beam interrogation were quantified. Bessel beam interrogation provided lower NEP, similar axial resolution, but lower lateral resolution. Thus, Bessel beam might be an alternative interrogation scheme for deep PAT imaging as high sensitivity is needed and the lateral resolution is limited by the aperture of the PAT system.

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DO - 10.1117/12.2675686

M3 - Conference contribution

AN - SCOPUS:85214829681

SN - 9781510664715

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Opto-Acoustic Methods and Applications in Biophotonics VI

A2 - Kim, Chulhong

A2 - Laufer, Jan

A2 - Ntziachristos, Vasilis

A2 - Zemp, Roger J.

PB - SPIE

T2 - 2023 European Conference on Biomedical Optics

Y2 - 25 June 2023 through 29 June 2023

ER -

Marques DM, Sheppard O, Zhang EZ, Beard PC, Munro PRT, Guggenheim JA. Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging. In Kim C, Laufer J, Ntziachristos V, Zemp RJ, editors, Opto-Acoustic Methods and Applications in Biophotonics VI. SPIE. 2023. 126310U. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2675686

Interrogating Fabry-Perot ultrasound sensors with Bessel beams for photoacoustic imaging

Abstract

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Conference

Bibliographical note

ASJC Scopus subject areas

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