Characterization of optoacoustic transducers through the analysis of angular-dependent frequency response

André Conjusteau; Sergey A. Ermilov; Richard Su; Hans-Peter Brecht; Matthew P. Fronheiser; Alexander A. Oraevsky

doi:10.1117/12.812339

24 February 2009 Characterization of optoacoustic transducers through the analysis of angular-dependent frequency response

André Conjusteau, Sergey A. Ermilov, Richard Su, Hans-Peter Brecht, Matthew P. Fronheiser, Alexander A. Oraevsky

Author Affiliations +

Proceedings Volume 7177, Photons Plus Ultrasound: Imaging and Sensing 2009; 71770U (2009) https://doi.org/10.1117/12.812339
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

Comprehensive characterization of optoacoustic transducers is achieved through the analysis of their frequency response using a procedure of measuring angular dependence of the transducer sensitivity to the ultrawide-band delta pulse. The testing was performed under standard repeatable operating conditions. Back-illumination of a blackened, acoustically matched, planar surface with a short laser pulse creates an acoustic impulse which was used as an ultrawide-band ultrasonic source. The bandwidth of such a source extends well over 10 MHz (6dB point at 16 MHz for illumination with a 16 ns pulse) and the low frequency roll-off is around 300 kHz. Analysis of the angular dependence of the frequency response yields invaluable directivity information about the detector under study, which in turn permits accurate forward and inverse problem models.

Citation Download Citation

André Conjusteau, Sergey A. Ermilov, Richard Su, Hans-Peter Brecht, Matthew P. Fronheiser, and Alexander A. Oraevsky "Characterization of optoacoustic transducers through the analysis of angular-dependent frequency response", Proc. SPIE 7177, Photons Plus Ultrasound: Imaging and Sensing 2009, 71770U (24 February 2009); https://doi.org/10.1117/12.812339

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

Includes PDF, HTML & Video, when available