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Proceedings Paper

High-energy laser beam diagnostics
Author(s): Antonio R. Marrujo; Edward C. Hensel
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Paper Abstract

The proof of principle for a new technique to determine the laser beam spatial profile on a surface was demonstrated. The technique proposed herein involves the use of a target surface with a back surface mounted array of thermocouples to obtain temperature history data of the back surface. These data provide input to a one-dimensional transient space marching inverse conduction code to solve the inverse problem and determine the absorbed flux and temperature conditions at the front surface. The packaged code allows for temperature dependent thermophysical properties of the material. The results of this technique are compared, in a qualitative sense, with the spatial beam profile derived using staring array infrared cameras viewing a diagnostic scatter plate. These two different measurement methods yielded consistent results. In addition, an absorbed temporal beam profile and total integrated absorbed energy for the surface were calculated.

Paper Details

Date Published: 6 June 1993
PDF: 12 pages
Proc. SPIE 1871, Intense Laser Beams and Applications, (6 June 1993); doi: 10.1117/12.145220
Show Author Affiliations
Antonio R. Marrujo, U.S. Army Space and Strategic Defense Command (United States)
Edward C. Hensel, New Mexico State Univ. (United States)

Published in SPIE Proceedings Vol. 1871:
Intense Laser Beams and Applications
William E. McDermott, Editor(s)

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