Obtaining finite element thermal loads from fluence maps and voxels

Victor L. Genberg; Gregory J. Michels; Gary Bisson

doi:10.1117/12.2531176

30 August 2019 Obtaining finite element thermal loads from fluence maps and voxels

Victor L. Genberg, Gregory J. Michels, Gary Bisson

Proceedings Volume 11100, Optomechanical Engineering 2019; 111000A (2019) https://doi.org/10.1117/12.2531176
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

In conducting a STOP analysis, it is often required to convert laser fluence maps or voxel maps from an optical analysis into finite element heat loads for thermal and thermoelastic analyses. These fluence maps are usually represented as a rectangular array at optical surfaces. A technique has been developed to convert these maps into surface and volumetric loads on arbitrary 2D and 3D finite element (FE) meshes. For lenses, any number of intermediate maps through the lens thickness are allowed when more resolution is required. Another output format used by optics codes is three dimensional cubes called voxels. Voxel data can also be converted to FE loads. As data checks, the total heat absorbed is reported for each surface and each lens volume and compared to the FE load created. The technique is available in SigFit, a commercially available tool integrating mechanical analysis with optical analysis.

Conference Presentation

Citation Download Citation

Victor L. Genberg, Gregory J. Michels, and Gary Bisson "Obtaining finite element thermal loads from fluence maps and voxels", Proc. SPIE 11100, Optomechanical Engineering 2019, 111000A (30 August 2019); https://doi.org/10.1117/12.2531176

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