High-energy laser beam diagnostics

Antonio R. Marrujo; Edward C. Hensel

doi:10.1117/12.145220

6 June 1993 High-energy laser beam diagnostics

Antonio R. Marrujo, Edward C. Hensel

Proceedings Volume 1871, Intense Laser Beams and Applications; (1993) https://doi.org/10.1117/12.145220
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Antonio R. Marrujo and Edward C. Hensel "High-energy laser beam diagnostics", Proc. SPIE 1871, Intense Laser Beams and Applications, (6 June 1993); https://doi.org/10.1117/12.145220

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