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Applied Optics

Applied Optics


  • Vol. 10, Iss. 5 — May. 1, 1971
  • pp: 1087–1091

Use of Channeled Spectra to Measure Absolute Phase Shift and Dispersion in Two Beam Interferometry

R. J. Sandeman  »View Author Affiliations

Applied Optics, Vol. 10, Issue 5, pp. 1087-1091 (1971)

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An application of channeled spectra to two beam interferometry is described in which the optical path to be measured produces a shift of the channeled spectrum from a distribution that is preset in order to minimize the errors involved. This provides an absolute measurement of the phase and dispersion localized at the slit of the spectrometer with an improvement in accuracy over monochromatic or two wavelength interferometry. Examples include a time resolved channeled spectrum of the electron, ion, and neutral densities behind a strong shock wave in argon.

© 1971 Optical Society of America

Original Manuscript: November 30, 1970
Published: May 1, 1971

R. J. Sandeman, "Use of Channeled Spectra to Measure Absolute Phase Shift and Dispersion in Two Beam Interferometry," Appl. Opt. 10, 1087-1091 (1971)

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