UV and IR laser interaction with metal surfaces

Victor F. Tarasenko; Andrei V. Fedenev; Igor M. Goncharenko; Nikolay N. Kovali; Evgenii E. I. Lipatov; Victor M. Orlovskii; Mikhail A. Shulepov

doi:10.1117/12.482075

13 September 2002 UV and IR laser interaction with metal surfaces

Victor F. Tarasenko, Andrei V. Fedenev, Igor M. Goncharenko, Nikolay N. Kovali, Evgenii E. I. Lipatov, Victor M. Orlovskii, Mikhail A. Shulepov

Author Affiliations +

Proceedings Volume 4760, High-Power Laser Ablation IV; (2002) https://doi.org/10.1117/12.482075
Event: International Symposium on High-Power Laser Ablation 2002, 2002, Taos, New Mexico, United States

Abstract

Presently, from the world data available on interaction of laser radiation with metal and dielectric surfaces and development of experimental diagnostic techniques by itself it is possible to raise a reverse question, namely, restoration of laser radiation energy spatial distribution through surface imprint. With this in mind, we have made the detailed morphology of imprint of a pulse HF-laser interaction with carbon steel surface through atomic force microscope. Interaction of the radiation of a relatively short pulse of ArXe-laser ((tau) _½equals400 ns, (lambda) equals1,73 micrometers , Q ~ 20 J/cm+2)) with carbon steel surface of 40X (4140 (USA)) type besides the surface layer hardening leaded to decrease of steel hardness at below original value on depth of about 10 - 12 micrometers . This effect can be related to occurrence of deformation and thermal residual stresses in the subsurface layer. At multiple-pulse interaction (~500 pulses) of UV-laser focused radiation ((lambda) equals0,222 or 0,308 micrometers , (tau) _½equals 12 or 20 ns) with the steel 40X (4140 (USA)) surface a distinct interference imprint of laser beam is formed after diffraction at outer diaphragm being determined by its form.

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Victor F. Tarasenko, Andrei V. Fedenev, Igor M. Goncharenko, Nikolay N. Kovali, Evgenii E. I. Lipatov, Victor M. Orlovskii, and Mikhail A. Shulepov "UV and IR laser interaction with metal surfaces", Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); https://doi.org/10.1117/12.482075

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