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written by Dick Peterson
Stroboscopic holographic inteferometry has been developed at an advanced undergraduatelevel allowing real-time imaging of standing sound waves in gas filled, closed tube resonators.  A heterodyne Mach-Zehnder interferometer was first built by students to show the feasibility of interferometric detection of sound waves in a small cell.  In the subsequent holographic study, the laser irradiance is modulated by an acousto-optic cell at frequencies near that of the standing wave, and a video camera records the fringe motion due to sound pressure changes.  Fractional fringe shifts are observed for an air filled cell, and multiple fringe shifts are imaged for the case of freon.  Sound reflections from the cell ends are easily observed, with non-sinusoidal waveforms dominating at high intensities due to position of resonator harmonics.

Presented by Dick Peterson
AAPT Summer Meeting - Workshop 38: Advanced Labs
Part of the American Association of Physics Teachers Conference Proceedings series
Portland, Oregon: July 17th - 21st, 2010
Subjects Levels Resource Types
Optics
- Modern Optics
= Holography
Oscillations & Waves
- Acoustics
= Wave Analysis and Synthesis
- Instruments
= Resonance Cavities
- Wave Motion
= Standing Waves
- Upper Undergraduate
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= Conference
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= Instructor Guide/Manual
= Laboratory
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- Reference Material
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© 2010 Bethel University
Record Creator:
Metadata instance created July 23, 2010 by Ramon Torres-Isea
Record Updated:
January 11, 2011 by Ramon Torres-Isea
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AIP Format
R. Peterson, presented at the AAPT Summer Meeting - Workshop 38: Advanced Labs, Portland, Oregon, 2010, WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782).
AJP/PRST-PER
R. Peterson, Holographic Real-Time Imaging of Standing Waves in Gases presented at the AAPT Summer Meeting - Workshop 38: Advanced Labs, Portland, Oregon, 2010, <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782>.
APA Format
Peterson, R. (2010, July 17th - 21st). Holographic Real-Time Imaging of Standing Waves in Gases. Paper presented at AAPT Summer Meeting - Workshop 38: Advanced Labs, Portland, Oregon. Retrieved April 25, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782
Chicago Format
Peterson, Richard. "Holographic Real-Time Imaging of Standing Waves in Gases." Paper presented at the AAPT Summer Meeting - Workshop 38: Advanced Labs, Portland, Oregon, July 17th - 21st, 2010. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782 (accessed 25 April 2014).
MLA Format
Peterson, Richard. "Holographic Real-Time Imaging of Standing Waves in Gases." AAPT Summer Meeting - Workshop 38: Advanced Labs. Portland, Oregon: 2010. of American Association of Physics Teachers Conference Proceedings. 25 Apr. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782>.
BibTeX Export Format
@inproceedings{ Author = "Richard Peterson", Title = {Holographic Real-Time Imaging of Standing Waves in Gases}, BookTitle = {AAPT Summer Meeting - Workshop 38: Advanced Labs}, Address = {Portland, Oregon}, Series = {American Association of Physics Teachers Conference Proceedings}, Month = {July 17th - 21st}, Year = {2010} }
Refer Export Format

%A Richard Peterson
%T Holographic Real-Time Imaging of Standing Waves in Gases
%S American Association of Physics Teachers Conference Proceedings
%D July 17th - 21st 2010
%C Portland, Oregon
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782
%O AAPT Summer Meeting - Workshop 38: Advanced Labs
%O July 17th - 21st
%O application/pdf

EndNote Export Format

%0 Conference Proceedings
%A Peterson, Richard
%D July 17th - 21st 2010
%T Holographic Real-Time Imaging of Standing Waves in Gases
%B AAPT Summer Meeting - Workshop 38: Advanced Labs
%C Portland, Oregon
%S American Association of Physics Teachers Conference Proceedings
%8 July 17th - 21st
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10294&DocID=1782


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