Optoacoustic imaging using thin polymer étalon

Shai Ashkenazi; Yang Hou; Buma, Takashi; O'Donnell, Matthew
March 2005
Applied Physics Letters;3/28/2005, Vol. 86 Issue 13, p134102
Academic Journal
Optical detection of ultrasound is a promising technique for high frequency imaging arrays. Detection resolution approaches the optical resolution, which can be on the order of the optical wavelength. We describe here an optical technique for ultrasound detection based on a thin (10 μm) Fabry–Perot étalon optimized for high resolution imaging. The signal to noise ratio (SNR) approaches that of an ideal piezoelectric transducer over a 100 MHz bandwidth. Array functionality is demonstrated by scanning a probe beam along a line. Thermoelastic excitation was applied to generate acoustic waves in a test phantom containing a single “pointlike” source. An image of the source was reconstructed using signals acquired from the étalon detector array.


Related Articles

  • Note: Piezoelectric polymers as transducers for the ultrasonic-reflection method and the application in mechanical property-screening of coatings. Wegener, Michael; Oehler, Harald; Lellinger, Dirk; Alig, Ingo // Review of Scientific Instruments;Jan2012, Vol. 83 Issue 1, p016102 

    In the last years, non-destructive ultrasonic testing methods are more and more frequently employed in order to investigate the drying and curing processes of different coatings. Among them an ultrasonic reflection method was developed allowing the simultaneous measurement with longitudinal and...

  • Demountable piezoelectric transducer holder for use at low temperatures. Manning, M. B.; Moelter, M. J.; Elbaum, C. // Review of Scientific Instruments;Jun87, Vol. 58 Issue 6, p1117 

    We present a design for a piezoelectric transducer holder for use at low temperatures, which is easily constructed and assembled. Improved acoustic signals with ‘‘ringing’’ eliminated were reliably obtained. The standard problems of demountability, electrical integrity,...

  • An Integrated Laser-Induced Piezoelectric/Differential Confocal Surface Acoustic Wave System for Measurement of Thin Film Young's Modulus. Fei Yang; Dorantes-Gonzalez, Dante J.; Kun Chen; Zimo Lu; Baoyin Jin; Yanning Li; Zhi Chen; Xiaotang Hu // Sensors (14248220);2012, Vol. 12 Issue 9, p12208 

    The present paper presents the design and development results of a system setup for measuring Young's modulus of thin films by laser-induced surface acoustic waves based on the integration of two detection methods, namely, piezoelectric transducer detection and differential confocal detection,...

  • High-frequency surface acoustic wave device based on thin-film piezoelectric interdigital transducers. Kumar, A. K. Sarin; Paruch, P.; Triscone, J.-M.; W., Daniau; Ballandras, S.; L., Pellegrino; Marré, D.; Tybell, T. // Applied Physics Letters;9/6/2004, Vol. 85 Issue 10, p1757 

    Using high-quality epitaxial c-axis Pb(Zr0.2Ti0.8)O3 films grown by off-axis magnetron sputtering onto metallic (001) Nb-doped SrTiO3 substrates, a nonconventional thin-film surface acoustic wave device based on periodic piezoelectric transducers was realized. The piezoelectric transducers...

  • Micromachined droplet ejector arrays for controlled ink-jet printing and deposition. Perc¸in, Go¨khan; Khuri-Yakub, Butrus T. // Review of Scientific Instruments;May2002, Vol. 73 Issue 5, p2193 

    In this article, we present a variation on the design of the micromachined flextensional transducer for use to eject liquids. The transducer is constructed by depositing a piezoelectric thin film to a thin, edge clamped, circular annular plate. By placing a fluid behind one face of a vibrating...

  • Effect on Passive Localization from the Shape Distortion of Triplet Linear Array Based on Piezoelectric Transducers. Fei Xu; Xianlong Liu // Sensors & Transducers (1726-5479);Dec2012, Vol. 147 Issue 12, p27 

    The triplet linear array is consisted of three piezoelectric transducers located in line. Passive directing and ranging with triplet linear array is a very useful method for target detecting. In this paper, we presented the principle of passive localization with triplet linear array and the...

  • Self-diagnostics of piezoelectric transducers. Kostyukov, Vladimir N.; Kostyukov, Alexey V. // Key Engineering Materials;2014, Vol. 613, p204 

    Equipment technical state monitoring systems contain hundreds of vibration and temperature sensors for real-time health monitoring of machinery. Monitoring systems reliability should significantly exceed the units stock reliability, being protected from accidents and incidents. The paper...

  • Design and performance of a piezoelectric actuated precise rotary positioner. Wang, Y. C.; Chang, S. H. // Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p105101 

    Industries including semiconductor, biotechnology, and nanotechnology are seeking compact and reliable nanometer resolution positioning techniques. To address this demand, this article presents a friction-drive rotary stage driven by a piezoelectric transducer (PZT) actuator. This stage includes...

  • Photoacoustic measurement of thermal diffusivity of polymer foils. Leite, N. F.; Cella, N.; Vargas, H.; Miranda, L. C. M. // Journal of Applied Physics;4/15/1987, Vol. 61 Issue 8, p3025 

    Focuses on a study that discussed the photoacoustic measurement of polymer foils 170 to 200 micrometer thick. Details of the experiment; Results and discussion.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics