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Ultra high frequency imaging acoustic microscope

Patent ·
OSTI ID:1175755
;
An imaging system includes: an object wavefront source and an optical microscope objective all positioned to direct an object wavefront onto an area of a vibrating subject surface encompassed by a field of view of the microscope objective, and to direct a modulated object wavefront reflected from the encompassed surface area through a photorefractive material; and a reference wavefront source and at least one phase modulator all positioned to direct a reference wavefront through the phase modulator and to direct a modulated reference wavefront from the phase modulator through the photorefractive material to interfere with the modulated object wavefront. The photorefractive material has a composition and a position such that interference of the modulated object wavefront and modulated reference wavefront occurs within the photorefractive material, providing a full-field, real-time image signal of the encompassed surface area.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC07-05ID14517
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
Patent Number(s):
7,050,174
Application Number:
11/146,576
OSTI ID:
1175755
Country of Publication:
United States
Language:
English

References (4)

Imaging laser ultrasonics measurement of the elastodynamic properties of paper conference January 2001
UHF acoustic microscopic imaging of resonator motion conference January 2000
Direct imaging of traveling Lamb waves in plates using photorefractive dynamic holography journal November 1999
Ultrasonic imaging of subsurface objects using photorefractive dynamic holography
  • Deason, Vance A.; Telschow, Kenneth L.; Watson, Scott M.
  • International Symposium on Optical Science and Technology, SPIE Proceedings https://doi.org/10.1117/12.449372
conference November 2001

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