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Title: Spatially translatable optical fiber-coupled heterodyne interferometer

Abstract

An interferometer is a useful diagnostic tool for measuring line-averaged electron density but is limited in its use because it generally measures at a fixed location. Here, we report here a spatially translatable fiber-coupled interferometer that measures the density of a high-speed MHD-driven plasma jet colliding with a target cloud. The interferometer uses a He–Ne laser coupled to a polarization-maintaining single mode optical fiber having a vacuum feedthrough. Lastly, the interferometer provides a measure of the spatial-temporal profile of the line-averaged electron density from which the change in jet velocity as a result of its collision with the target cloud can be deduced.

Authors:
 [1]; ORCiD logo [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
Publication Date:
Research Org.:
California Inst. of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1529222
Alternate Identifier(s):
OSTI ID: 1413077
Grant/Contract Number:  
AR0000565
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 88; Journal Issue: 12; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Seo, Byonghoon, and Bellan, Paul M. Spatially translatable optical fiber-coupled heterodyne interferometer. United States: N. p., 2017. Web. doi:10.1063/1.5007070.
Seo, Byonghoon, & Bellan, Paul M. Spatially translatable optical fiber-coupled heterodyne interferometer. United States. doi:10.1063/1.5007070.
Seo, Byonghoon, and Bellan, Paul M. Wed . "Spatially translatable optical fiber-coupled heterodyne interferometer". United States. doi:10.1063/1.5007070. https://www.osti.gov/servlets/purl/1529222.
@article{osti_1529222,
title = {Spatially translatable optical fiber-coupled heterodyne interferometer},
author = {Seo, Byonghoon and Bellan, Paul M.},
abstractNote = {An interferometer is a useful diagnostic tool for measuring line-averaged electron density but is limited in its use because it generally measures at a fixed location. Here, we report here a spatially translatable fiber-coupled interferometer that measures the density of a high-speed MHD-driven plasma jet colliding with a target cloud. The interferometer uses a He–Ne laser coupled to a polarization-maintaining single mode optical fiber having a vacuum feedthrough. Lastly, the interferometer provides a measure of the spatial-temporal profile of the line-averaged electron density from which the change in jet velocity as a result of its collision with the target cloud can be deduced.},
doi = {10.1063/1.5007070},
journal = {Review of Scientific Instruments},
number = 12,
volume = 88,
place = {United States},
year = {2017},
month = {12}
}

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