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Q: Fachverband Quantenoptik und Photonik
Q 7: Poster I
Q 7.12: Poster
Montag, 6. März 2023, 16:30–19:00, Empore Lichthof
Potential Hazards and Mitigation of X-Ray Radiation Generated by Laser-Induced Plasma from Research-Grade Laser Systems — •Philip Mosel1, Sven Fröhlich1, Jose Mapa1, Sven Kleinert1, David Zuber1, Jan Düsing2, Thomas Püster2, Günther Dittmar3, Uwe Morgner1, and Milutin Kovacev1 — 1Institute of Quantum Optics, Cluster of Excellence PhoenixD and Quantum Frontiers, Leibniz Universität Hannover, Hannover, 30167 — 2Laser Zentrum Hannover e.V., Hannover, 30419 — 3Ingenieur-Büro Prof. Dr.-Ing. G. Dittmar, Aalen, 73433
Ultra-short pulses and high laser intensities are used in a variety of laser-matter applications in laboratories and industry. Such processes can lead to unwanted generation of X-rays, which are a dangerous radiation factor [1]. We present an analysis of the radiation dose rate and the emitted X-ray spectrum during ablation of a rotating copper cylinder as a function of different laser parameters [2]. Furthermore, we studied the X-ray emission from commonly used metals, alloys and ceramics for ultrafast laser processing [3]. The results show that focused sub-picosecond pulses with intensity higher than 1013 W/cm2 can exceed the annual irradiation limit even in one hour, making adequate shielding a necessity for researchers’ safety.
[1] Legall, Herbert, et al., Applied Physics A 125.8 (2019): 1-8.
[2] Mosel, Philip, et al., Optics Express 30.20 (2022): 37038-37050.
[3] Mosel, Philip, et al., Materials 14.16 (2021): 4397.