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Proceedings Paper

Research on quasi-cw and pulse interaction of strong laser radiation with the military technical materials
Author(s): Antoni Rycyk; Krzysztof Czyż; Antoni Sarzyński; Wojciech Skrzeczanowski; Roman Ostrowski; Marek Strzelec; Karol Jach; Robert Świerczyński
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Paper Abstract

The paper describes work connected to the investigation of the interaction of strong laser radiation with selected metals, constituting typical materials applied in military technology, like aluminum, copper, brass and titanium. A special laser experimental stand was designed and constructed to achieve this objective. The system consisted of two Nd:YAG lasers working in the regime of free generation (quasi-cw) and another Nd:YAG laser, generating short pre-pulses in the Qswitching regime. During the concurrent operation of both quasi-cw systems it was possible to obtain pulse energies amounting to 10 J in a time period (pulses) of 1 ms. The synchronized, serial operation resulted in energy amounting to 5 J over a time period (pulse) of 2 ms.

Variations of the target’s surface reflection coefficient, caused by the interaction of short pre-pulses with high power density were determined. The experiments were performed using a standard Nd:YAG laser with amplifiers, generating output pulses whose duration amounted to 10 ns and energy to 1 J, with near Gaussian profile.

Laser induced breakdown spectroscopy (LIBS) was used to analyze the emission spectra of targets under the conditions of the interaction of destructive strong and weak as well as long and short excitation laser pulses. A decay of the spectra in the UV range from 200 to around 350 nm was observed when irradiating the target with a long, quasi-cw destructive pulse. Moreover, in the case of an Al target, some AlO molecular spectra appeared, suggesting a chemical reaction of the aluminum atoms with oxygen.

Paper Details

Date Published: 8 December 2016
PDF: 11 pages
Proc. SPIE 10159, Laser Technology 2016: Progress and Applications of Lasers, 101590P (8 December 2016); doi: 10.1117/12.2261979
Show Author Affiliations
Antoni Rycyk, Military Univ. of Technology (Poland)
Krzysztof Czyż, Military Univ. of Technology (Poland)
Antoni Sarzyński, Military Univ. of Technology (Poland)
Wojciech Skrzeczanowski, Military Univ. of Technology (Poland)
Roman Ostrowski, Military Univ. of Technology (Poland)
Marek Strzelec, Military Univ. of Technology (Poland)
Karol Jach, Military Univ. of Technology (Poland)
Robert Świerczyński, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 10159:
Laser Technology 2016: Progress and Applications of Lasers
Ryszard S. Romaniuk; Krzysztof Kopczynski; Jan K. Jabczyński; Zygmunt Mierczyk, Editor(s)

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