8 December 2016 Research on quasi-cw and pulse interaction of strong laser radiation with the military technical materials
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Proceedings Volume 10159, Laser Technology 2016: Progress and Applications of Lasers; 101590P (2016) https://doi.org/10.1117/12.2261979
Event: XIth Symposium on Laser Technology, 2016, Jastarnia, Poland
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.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antoni Rycyk, Antoni Rycyk, Krzysztof Czyż, Krzysztof Czyż, Antoni Sarzyński, Antoni Sarzyński, Wojciech Skrzeczanowski, Wojciech Skrzeczanowski, Roman Ostrowski, Roman Ostrowski, Marek Strzelec, Marek Strzelec, Karol Jach, Karol Jach, Robert Świerczyński, Robert Świerczyński, } "Research on quasi-cw and pulse interaction of strong laser radiation with the military technical materials", Proc. SPIE 10159, Laser Technology 2016: Progress and Applications of Lasers, 101590P (8 December 2016); doi: 10.1117/12.2261979; https://doi.org/10.1117/12.2261979
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