Evaluation of the gaussian beam model for prediction of LDV fringe fields

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A simple model is developed to estimate the fringe field geometry at the intersection of two Gaussian laser beams. Comparison of the model results to experimentally measured fringe spacing demonstrates that while the model predicts the fringe geometry well when the beam waists are far from the intersection volume, it performs poorly under nominally ideal conditions- when the beam waists are located at the intersection. Data obtained with two different laser sources indicate that the discrepancies between the theory and experiment are likely due to deviations of the laser beam from an ideal Gaussian beam. With a high quality laser, ... continued below

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8 p.

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Miles, P.C. & Witze, P.O. December 31, 1996.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Livermore, CA (United States)
    Place of Publication: Livermore, California

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Description

A simple model is developed to estimate the fringe field geometry at the intersection of two Gaussian laser beams. Comparison of the model results to experimentally measured fringe spacing demonstrates that while the model predicts the fringe geometry well when the beam waists are far from the intersection volume, it performs poorly under nominally ideal conditions- when the beam waists are located at the intersection. Data obtained with two different laser sources indicate that the discrepancies between the theory and experiment are likely due to deviations of the laser beam from an ideal Gaussian beam. With a high quality laser, the details of the fringe field geometry are still not well duplicated by the Gaussian beam model, although the magnitude of the variation in fringe spacing and the effect of the controlling system parameters are correctly predicted.

Physical Description

8 p.

Notes

OSTI as DE97051390

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  • 8. international symposium on applications of laser techniques to fluid mechanics, Lisbon (Portugal), 8-11 Jul 1996

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  • Other: DE97051390
  • Report No.: SAND--96-8631C
  • Report No.: CONF-9607187--1
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 461219
  • Archival Resource Key: ark:/67531/metadc682451

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 12, 2016, 8:17 p.m.

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Miles, P.C. & Witze, P.O. Evaluation of the gaussian beam model for prediction of LDV fringe fields, article, December 31, 1996; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc682451/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.