TITLE

Laser-generation of ultrasonic X-waves using axicon transducers

AUTHOR(S)
Passler, K.; Nuster, R.; Gratt, S.; Burgholzer, P.; Paltauf, G.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Photoacoustic and classical ultrasound imaging are both based upon ultrasonic waves but use different contrast mechanisms. For the development of a scanning acoustic microscope that uses both contrasts, an axicon transducer generating nondiffracting ultrasound, also called X-waves, by illumination with short laser pulses is investigated. Such a transducer provides simultaneously high depth of field and high lateral resolution. In this work, the spatial and temporal characteristics of the laser-generated X-waves are investigated using experiments and theoretical simulations. The experimental results reveal a characteristic spatial pulse width of 50 μm and a focal depth that complies well with the theoretical predictions.
ACCESSION #
36609455

 

Related Articles

  • High frequency ultrasonic imaging using thermal mechanical noise recorded on capacitive micromachined transducer arrays. Lani, Shane; Satir, Sarp; Gurun, Gokce; Sabra, Karim G.; Levent Degertekin, F. // Applied Physics Letters;11/28/2011, Vol. 99 Issue 22, p224103 

    The cross-correlation of diffuse thermal-mechanical noise recorded by two sensors yields an estimate of the ultrasonic waves propagating between them. We used this approach at high frequencies (1-30 MHz) on a capacitive micromachined ultrasonic transducer (CMUT) ring array (d = 725 μm),...

  • A Modeling Approach to Interpret the Dispersion Relationship for Piezoelectric Sources. Kreuzinger, Tobias; Hurlebaus, Stefan; Michaels, Jennifer E.; Jacobs, Laurence J. // AIP Conference Proceedings;2005, Vol. 760 Issue 1, p196 

    Guided wave techniques have great potential for the structural health monitoring of plate-like components. Previous research has demonstrated the effectiveness of combining laser-ultrasonic techniques with time-frequency representations to experimentally develop the dispersion relationship of a...

  • Lamb Mode Selection for Accurate Wall Loss Estimation via Guided Wave Tomography. Huthwaite, P.; Ribichini, R.; Lowe, M. J. S.; Cawley, P. // AIP Conference Proceedings;2014, Vol. 1581, p193 

    Guided wave tomography offers a method to accurately quantify wall thickness losses in pipes and vessels caused by corrosion. This is achieved using ultrasonic waves transmitted over distances of approximately 1-2m, which are measured by an array of transducers and then used to reconstruct a map...

  • Corrosion Monitoring Using High-frequency Guided Ultrasonic Waves. Fromme, Paul // AIP Conference Proceedings;2014, Vol. 1581, p209 

    Corrosion develops due to adverse environmental conditions during the life cycle of a range of industrial structures, e.g., offshore oil platforms, ships, and desalination plants. Both pitting corrosion and generalized corrosion leading to wall thickness loss can cause the degradation of the...

  • Multi-Objects Ultrasonic Tomography by Immersion Circular Array. Liu Yang; Chunguang Xu; Xianghui Guo; Xinliang Li; Qi lin; Ye Huang; Haoyu Sun // Advanced Materials Research;2014, Vol. 1006-1007, p879 

    The typical application of ultrasonic tomography is the determination of process parameters like component flow rates and material fractions in industrial environment. Another promising application is non-invasive health monitoring in medical care. Both acoustic attenuation and acoustic...

  • Isolation of crack-induced standing wave energy from laser scanned ultrasonic image. An, Yun-Kyu; Park, Byeong Jin; Sohn, Hoon // AIP Conference Proceedings;5/18/2012, Vol. 1430 Issue 1, p671 

    In this study, a new standing wave energy (SWE) imaging technique is developed so that a crack in a metallic structure can be detection from ultrasonic wavefield image obtained by a laser scanning system. First, a non-contact laser ultrasonic scanning system is developed so that ultrasonic waves...

  • Laser Interferometric Measurements of Air-Coupled Lamb Waves. Garcia-Rodriguez, M.; Yañez, Y.; Garcia-Hernandez, M. J.; Salazar, J.; Turo, A.; Chavez, J. A. // AIP Conference Proceedings;5/28/2010, Vol. 1253 Issue 1, p88 

    In this paper, experimental measurements of the vibration pattern that results when an air-coupled A0 Lamb wave mode propagates in a plate are presented. Lamb waves are generated using an air-coupled piezoelectric transducer array. The measurements were performed in 304 stainless steel using...

  • Laser-Ultrasonics: From the Laboratory to Industry. Monchalin, Jean-Pierre // AIP Conference Proceedings;2004, Vol. 700 Issue 1, p3 

    A broad overview of the field of laser-ultrasonics is presented. This overview draws from developments at the Industrial Materials Institute of the National Research Council of Canada as well as elsewhere. The principles of generation and detection are presented, stressing a few key...

  • Non-Contact Interaction of Ultrasonic Wave on Laser Beam. Muc, S.; Gudra, T.; Beres-Pawlik, E. // Acta Physica Polonica, A.;Oct2011, Vol. 120 Issue 4, p702 

    The article presents the results of Matlab simulations and experimental studies of non-contact influence of ultrasonic wave on laser beam. A role of the air-gap and the influence of the air-gap on laser-ultrasonic transmission in optical fiber were examined. Two optical fibers were used with...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics