Abstract

An apparatus has been designed for real-time and double-exposure holographic interferometry to determine radiation absorbed dose distributions in transparent liquids. The change in refractive index of the liquid due to a temperature rise after irradiation is measured interferometrically. In a cylindrically symmetrical radiation field, the dose distribution can be computed from data supplied by the reconstruction of the holographic interferogram taken as side-view profile of the change in optical pathlength. Relatively inexpensive components such as a low-powered He–Ne laser together with a conventional photographic shutter and low-cost mirrors and lenses were used. The mathematical procedure for unfolding the three-dimensional dose distribtion is described, and an example is given for use with a high-intensity, pulsed, 2-MV electron source.

© 1971 Optical Society of America

Radiation-induced Changes in Refractive Index and Absorption Coefficient for Several Optical Materials

D. R. Olson, H. D. Dieselman, and J. B. Schroeder
Appl. Opt. 10(1) 81-86 (1971)

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

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

A Generalized Technique of Two-Wavelength, Nondiffuse Holographic Interferometry

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

Reflectance Measurements on Cavity Radiators

O. C. Jones and C. Forno
Appl. Opt. 10(12) 2644-2650 (1971)

Inplane Displacement of a Stressed Membrane with a Hole Measured by Holographic Interferometry

A. D. Wilson
Appl. Opt. 10(4) 908-912 (1971)