Abstract/Details

A FREQUENCY SHIFTED LASER INTERFEROMETER


1980 1980

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Abstract (summary)

The world's energy and associated political problems make controlled thermonuclear reactions an attractive national and international goal. Experiments in the magnetic confinement of plasmas are being made to study the conditions necessary for a fusion reaction. This paper deals with the design, construction, testing and utilization of a frequency shifted laser (He-Ne) interferometer designed for use on the topolotron, a pulsed plasma machine operated by the Physics Department of Brigham Young University. The interferometer provides a time history of the average electron density along a selected chord. The rms noise level of the interferometer is two degrees over a fifty-four microsecond time interval. The plasma and reference beams are optically heterodyned to produce an 80 MHz beat frequency which is phase modulated by changes in the plasma electron density. The modulated optical beat frequency is carried by an optical fiber into a low noise environment where the base band phase and amplitude information is recovered and displayed by a mini-computer.

Indexing (details)


Subject
Electrical engineering
Classification
0544: Electrical engineering
Identifier / keyword
Applied sciences
Title
A FREQUENCY SHIFTED LASER INTERFEROMETER
Author
HUBER, DAVID RUSSELL
Number of pages
120
Publication year
1980
Degree date
1980
School code
0022
Source
DAI-B 41/05, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
University/institution
Brigham Young University
University location
United States -- Utah
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
8025612
ProQuest document ID
303000308
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/303000308
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