Application features of pseudo-pulse laser processing of corundum to create radiation-sensitive thin layers

Andrey D. Petrakovich; Alexander I. Surdo; Rinat M. Abashev

doi:10.17308/kcmf.2026.28/13689

Authors

Andrey D. Petrakovich M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18, Sofya Kovalevskaya st., Yekaterinburg 620108, Russian Federation
Alexander I. Surdo M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18, Sofya Kovalevskaya st., Yekaterinburg 620108, Russian Federation
Rinat M. Abashev M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18, Sofya Kovalevskaya st., Yekaterinburg 620108, Russian Federation

DOI:

https://doi.org/10.17308/kcmf.2026.28/13689

Keywords:

Single crystal high-purity corundum, Surface, IR laser processing, Thin radiation-sensitive layers, Optically stimulated luminescence (OSL), Skin and eye lens dosimetry

Abstract

Objective: To develop a new laser processing method for high-purity single crystal α-Al₂O₃ aimed at producing mechanically durable skin detectors with the required thickness radiation-sensitive layer and increased optically stimulated luminescence (OSL) output.

Experimental: A new laser processing method has been developed, enabling the fabrication of mechanically durable skin detectors from high-purity single crystal α-Al₂O₃ with increased OSL efficiency, suitable for skin dosimetry. These detectors feature the necessary thickness of the radiation-sensitive layer and a high proportion of usable samples. OSL output is maximized when the energy density transferred to the laser beam impact area is 12–15 kJ/cm², with the spacing between two adjacent scan lines and the centers of neighboring laser exposure areas being 150–160 μm, and the scan line length is 50–55 μm.

Conclusions: The creation of thin radiation-sensitive layers with a thickness of 5 mg/cm² and a high OSL output is possible not only with pulsed but also with continuous IR laser radiation using a pulse-mode imitation during scanning a checkerboard pattern

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Author Biographies

Andrey D. Petrakovich, M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18, Sofya Kovalevskaya st., Yekaterinburg 620108, Russian Federation

Engineer-Researcher of the Laboratory of Intelligent Diagnostic Technologies, M. N. Mikheev Institute of Metal Physics of Ural Branch of the Russian Academy of Sciences (Yekaterinburg, Russian Federation)
Alexander I. Surdo, M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18, Sofya Kovalevskaya st., Yekaterinburg 620108, Russian Federation

Dr. Sci. (Phys.–Math.), Chief researcher (Laboratory of Intelligent Diagnostic Technologies), M. N. Mikheev Institute of Metal Physics of Ural Branch of the Russian Academy of Sciences (Yekaterinburg, Russian Federation)
Rinat M. Abashev, M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18, Sofya Kovalevskaya st., Yekaterinburg 620108, Russian Federation

Cand. Sci. (Phys.–Math.)., Senior Researcher (Laboratory of Intelligent Diagnostic Technologies), M. N. Mikheev Institute of Metal Physics of Ural Branch of the Russian Academy of Sciences (Yekaterinburg, Russian Federation)

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