Interferometric strain measurements with a fiber-optic probe

E. D. Burnham-Fay, D. W. Jacobs-Perkins, J. D. Ellis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Experience at the Laboratory for Laser Energetics has shown that broadband base vibrations make it difficult to position cryogenic inertial confinement fusion targets. These effects must be mitigated for National Ignition Facility-scale targets; to this end an active vibration stabilization system is proposed. A single-mode optical fiber strain probe and a novel fiber contained heterodyne interferometer have been developed as a position feedback sensor for the vibration control system. A resolution limit of 54.5 n; is measured with the optical strain gauge, limited by the lock-in amplifier. Experimental measurements of the sensor that show good agreement with reference resistive strain gauge measurements are presented.

Original languageEnglish (US)
Title of host publicationApplied Advanced Optical Metrology Solutions
EditorsJames D. Trolinger, Erik Novak, Erik Novak, James D. Trolinger
PublisherSPIE
ISBN (Electronic)9781628417425, 9781628417425
DOIs
StatePublished - Jan 1 2015
Externally publishedYes
EventApplied Advanced Optical Metrology Solutions - San Diego, United States
Duration: Aug 10 2015Aug 12 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9576
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceApplied Advanced Optical Metrology Solutions
CountryUnited States
CitySan Diego
Period8/10/158/12/15

Keywords

  • fiber optics
  • interferometry
  • metrology
  • strain

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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