Laser-induced phenomena in metals

K. B. Abramova; A. M. Kondyrev; I. Ya. Puchonto; A. I. Rusakov; A. A. Semenov; I. P. Shcherbakov

doi:10.1117/12.271689

4 April 1997 Laser-induced phenomena in metals

K. B. Abramova, A. M. Kondyrev, I. Ya. Puchonto, A. I. Rusakov, A. A. Semenov, I. P. Shcherbakov

Proceedings Volume 3093, Nonresonant Laser-Matter Interaction (NLMI-9); (1997) https://doi.org/10.1117/12.271689
Event: Nonresonant Laser-Matter Interaction, 1996, St. Petersburg, Russian Federation

Abstract

Mechanoluminescence and thermal radiation induced in the back side of metallic targets irradiated by a laser pulse were investigated. Neodymium glass laser was used (lambda equals 1.06 micrometer, duration of pulse 1.2 ms, beam diameter 2 - 5 mm); two detective systems: (1) photomultiplier with sensitivity of 10^-16 W in the region 300 - 800 nm; (2) photoresistor with sensitivity of 10^-10W in the region 800 - 1500 nm; gold, silver, platinum, copper and titanium targets 1 - 0.1 mm thick, 40 mm diameter and investigated optical radiation (luminescent and thermal) from back side of target as function of laser pulse energy, number of laser pulses and structure (density of dislocations) of target material. The luminescence and thermal radiation of target back side were registered. The laser pulse energy was quite small: P_las approximately equals 0.2 P_th (P_th - energy threshold of the sample). The evolution of luminescence by cyclic irradiation was observed. It is demonstrated that the excitation of luminescence depends on the initial structure of the metallic target on the density of dislocations.

Citation Download Citation

K. B. Abramova, A. M. Kondyrev, I. Ya. Puchonto, A. I. Rusakov, A. A. Semenov, and I. P. Shcherbakov "Laser-induced phenomena in metals", Proc. SPIE 3093, Nonresonant Laser-Matter Interaction (NLMI-9), (4 April 1997); https://doi.org/10.1117/12.271689

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