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Title: Frustrated total internal reflection acoustic field sensor

Abstract

A frustrated total internal reflection acoustic field sensor which allows the acquisition of the acoustic field over an entire plane, all at once. The sensor finds use in acoustic holography and acoustic diffraction tomography. For example, the sensor may be produced by a transparent plate with transparent support members tall enough to support one or more flexible membranes at an appropriate height for frustrated total internal reflection to occur. An acoustic wave causes the membrane to deflect away from its quiescent position and thus changes the amount of light that tunnels through the gap formed by the support members and into the membrane, and so changes the amount of light reflected by the membrane. The sensor(s) is illuminated by a uniform tight field, and the reflection from the sensor yields acoustic wave amplitude and phase information which can be picked up electronically or otherwise.

Inventors:
 [1]
  1. Pleasanton, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872974
Patent Number(s):
6056696
Assignee:
Regents of University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
frustrated; total; internal; reflection; acoustic; field; sensor; allows; acquisition; entire; plane; holography; diffraction; tomography; example; produced; transparent; plate; support; tall; flexible; membranes; appropriate; height; occur; wave; causes; membrane; deflect; quiescent; position; changes; amount; light; tunnels; gap; formed; reflected; illuminated; uniform; tight; yields; amplitude; phase; information; picked; electronically; otherwise; internal reflection; light reflected; acoustic wave; total internal; acoustic field; phase information; gap formed; flexible membrane; transparent plate; reflection acoustic; frustrated total; field sensor; /600/73/128/

Citation Formats

Kallman, Jeffrey S. Frustrated total internal reflection acoustic field sensor. United States: N. p., 2000. Web.
Kallman, Jeffrey S. Frustrated total internal reflection acoustic field sensor. United States.
Kallman, Jeffrey S. Sat . "Frustrated total internal reflection acoustic field sensor". United States. https://www.osti.gov/servlets/purl/872974.
@article{osti_872974,
title = {Frustrated total internal reflection acoustic field sensor},
author = {Kallman, Jeffrey S},
abstractNote = {A frustrated total internal reflection acoustic field sensor which allows the acquisition of the acoustic field over an entire plane, all at once. The sensor finds use in acoustic holography and acoustic diffraction tomography. For example, the sensor may be produced by a transparent plate with transparent support members tall enough to support one or more flexible membranes at an appropriate height for frustrated total internal reflection to occur. An acoustic wave causes the membrane to deflect away from its quiescent position and thus changes the amount of light that tunnels through the gap formed by the support members and into the membrane, and so changes the amount of light reflected by the membrane. The sensor(s) is illuminated by a uniform tight field, and the reflection from the sensor yields acoustic wave amplitude and phase information which can be picked up electronically or otherwise.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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