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Interferometric Faraday effect magnetic field measurements
written by Richard W. Peterson, Connor D. Fredrick, and Keith R. Stein
The Faraday effect has ongoing applications including optical isolators and measuring dynamic magnetic fields in lab or space-based plasmas. A direct interferometric study of the circular birefringence underlying the Faraday effect provides a powerful platform for creative work in the undergraduate optics laboratory and makes clear the underlying physics. This workshop introduces a heterodyne interferometer for determining phase shifts between left- and right- handed circular polarizations as they pass through a substance in the direction of the magnetic field. Phase shifts due to magnetic fields within a commercially available 1.3 cm long terbium gallium garnet (TGG) crystal (after 3 passes of the 633 nm laser beam) can be plotted as a function of time – corresponding to B(t) down to the mT range. In the case of an broader advanced lab project format involving several weeks of time, the experiment may also provide a venue for introducing the use of heterodyne interferometers in measuring rapidly changing optical path length changes on the nanometer scale.
Subjects Lab Level Resource Types
Electricity & Magnetism
- Magnetic Fields and Forces
= Magnetic Fields
Modern Physics
- General
Optics
- Modern Optics
- Advanced Undergraduate
- Instructional Material
= Laboratory
Material Category Formats Ratings
- Lab Manual
- application/pdf
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Format:
application/pdf
Access Rights:
Free access
Restriction:
© 2014 Bethel University
Keywords:
Interferometry, optics laboratories
Record Creator:
Metadata instance created February 1, 2017 by Jeremiah Williams
Record Updated:
May 10, 2017 by Jeremiah Williams
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Record Link
AIP Format
R. Peterson, C. Fredrick, and K. Stein, (2014), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674).
AJP/PRST-PER
R. Peterson, C. Fredrick, and K. Stein, Interferometric Faraday effect magnetic field measurements, (2014), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674>.
APA Format
Peterson, R., Fredrick, C., & Stein, K. (2014). Interferometric Faraday effect magnetic field measurements. Retrieved May 23, 2017, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674
Chicago Format
Peterson, R, C. Fredrick, and K. Stein. Interferometric Faraday effect magnetic field measurements. 2014. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674 (accessed 23 May 2017).
MLA Format
Peterson, Richard, Connor D. Fredrick, and Keith R. Stein. Interferometric Faraday effect magnetic field measurements. 2014. 23 May 2017 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674>.
BibTeX Export Format
@misc{ Author = "Richard Peterson and Connor D. Fredrick and Keith R. Stein", Title = {Interferometric Faraday effect magnetic field measurements}, Volume = {2017}, Number = {23 May 2017}, Year = {2014} }
Refer Export Format

%A Richard Peterson
%A Connor D. Fredrick
%A Keith R. Stein
%T Interferometric Faraday effect magnetic field measurements
%D 2014
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674
%O application/pdf

EndNote Export Format

%0 Electronic Source
%A Peterson, Richard
%A Fredrick, Connor D.
%A Stein, Keith R.
%D 2014
%T Interferometric Faraday effect magnetic field measurements
%V 2017
%N 23 May 2017
%9 application/pdf
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=14314&DocID=4674


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