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Arrays of 3D micro-columns generated by laser ablation of Ta and steel: modelling of a black body emitter

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Abstract

Three-dimensional extended arrays of micro-columns are generated on the surface of Ta and several stainless steels by their ablation by radiation of a Cu vapor laser either in vacuum or in air. The reflectivity of the arrays is tested in both visible and near-IR regions using the facilities at NASA Johnson Space Center. The reflectivity of the laser-treated areas was found to be very low (0.03–0.08) in the range 250–2800 nm. The emissivity of 3D arrays measured at elevated temperatures is close to the emissivity of a calibrated black body emitter. The effects of the experimental conditions of ablation (laser fluence, environment, etc.) on the integral optical characteristics of the generated arrays are discussed.

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Authors and Affiliations

  1. Texas Center for Superconductivity and Advanced Materials, University of Houston, Houston, TX, USA

    A. Bensaoula, C. Boney, R. Pillai & D. Starikov

  2. Wave Research Center, General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Street, 119991, Moscow, Russia

    G.A. Shafeev & A.V. Simakin

Authors
  1. A. Bensaoula
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  2. C. Boney
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  3. R. Pillai
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  4. G.A. Shafeev
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  5. A.V. Simakin
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  6. D. Starikov
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Corresponding author

Correspondence to G.A. Shafeev.

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PACS

42.62.-b; 79.20.Ds; 81.15.Fg

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Bensaoula, A., Boney, C., Pillai, R. et al. Arrays of 3D micro-columns generated by laser ablation of Ta and steel: modelling of a black body emitter. Appl. Phys. A 79, 973–975 (2004). https://doi.org/10.1007/s00339-004-2588-z

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  • DOI: https://doi.org/10.1007/s00339-004-2588-z

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