Abstract

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

Two-Wavelength Holographic Interferometry for Transparent Media Using a Diffraction Grating

F. Weigl
Appl. Opt. 10(5) 1083-1086 (1971)

Measurement of Parallelism of the Surfaces of a Transparent Sample Using Two-Beam Nonlocalized Fringes Produced by a Laser

J. H. Wasilik, T. V. Blomquist, and C. S. Willett
Appl. Opt. 10(9) 2107-2112 (1971)

A Generalized Technique of Two-Wavelength, Nondiffuse Holographic Interferometry

F. Weigi
Appl. Opt. 10(1) 187-192 (1971)

Dual-Channel Multiplex System for Precise Measurement of Displacement and Shape of Spectral Lines

F. Rostas, J. L. Lemaire, and P. Felenbok
Appl. Opt. 10(4) 801-804 (1971)

Optical Constants of Far Infrared Materials. I: Analysis of Channeled Spectra and Application to Mylar

E. V. Loewenstein and D. R. Smith
Appl. Opt. 10(3) 577-583 (1971)