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Interferometric Faraday effect magnetic field measurements
published by the Bethel University
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 experiment introduces a heterodyne interferometer for determining phase shifts between left- and righthanded 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
Optics
- Interference
= Interferometers
- Modern Optics
= Physical Optics
- Advanced Undergraduate
- Instructional Material
= Instructor Guide/Manual
= Laboratory
= Student Guide
Material Category Formats Ratings
- Lab Manual
- application/pdf
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Format:
application/pdf
Access Rights:
Free access
Restriction:
© 2014 Bethel University
Keyword:
Faraday Rotation
Record Creator:
Metadata instance created December 8, 2015 by Ramon Torres-Isea
Record Updated:
December 8, 2015 by Ramon Torres-Isea
Last Update
when Cataloged:
December 8, 2015
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Record Link
AIP Format
(Bethel University, St. Paul, 2014), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244).
AJP/PRST-PER
Interferometric Faraday effect magnetic field measurements, (Bethel University, St. Paul, 2014), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244>.
APA Format
Interferometric Faraday effect magnetic field measurements. (2015, December 8). Retrieved May 29, 2017, from Bethel University: http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244
Chicago Format
Bethel University. Interferometric Faraday effect magnetic field measurements. St. Paul: Bethel University, December 8, 2015. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244 (accessed 29 May 2017).
MLA Format
Interferometric Faraday effect magnetic field measurements. St. Paul: Bethel University, 2014. 8 Dec. 2015. 29 May 2017 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244>.
BibTeX Export Format
@misc{ Title = {Interferometric Faraday effect magnetic field measurements}, Publisher = {Bethel University}, Volume = {2017}, Number = {29 May 2017}, Month = {December 8, 2015}, Year = {2014} }
Refer Export Format

%T Interferometric Faraday effect magnetic field measurements
%D December 8, 2015
%I Bethel University
%C St. Paul
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244
%O application/pdf

EndNote Export Format

%0 Electronic Source
%D December 8, 2015
%T Interferometric Faraday effect magnetic field measurements
%I Bethel University
%V 2017
%N 29 May 2017
%8 December 8, 2015
%9 application/pdf
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=13826&DocID=4244


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