Reflection of high-intensity nanosecond Nd:YAG laser pulses by metals

Benavides, O.; Golikov, V.; Lebedeva, O.
July 2013
Applied Physics A: Materials Science & Processing;Jul2013, Vol. 112 Issue 1, p113
Academic Journal
Total reflectivity of silver and molybdenum samples irradiated by high-intensity nanosecond Nd:YAG laser pulses in air of atmospheric pressure is experimentally studied as a function of laser fluence in the range of 0.1-100 J/cm. The study shows that at laser fluences below the plasma formation threshold the total reflectivity of both silver and molybdenum remains virtually equal to the table room-temperature reflectivity values. The total reflectivity of these metals begins to decrease at a laser fluence of the plasma formation threshold. As the laser fluence increases above the plasma formation threshold, the reflectivity sharply drops to a low value and then remains unchanged with further increasing laser fluence. Calculation of the surface temperature at the plasma formation threshold fluence shows that the surface temperature value is substantially below the melting point that indicates an important role of the surface nanostructural defects in the plasma formation on a real sample due to their enhanced heating caused by both plasmonic absorption and plasmonic nanofocusing.


Related Articles

  • On the possibility of the amplification of subterahertz electromagnetic radiation in a plasma channel created by a high-intensity ultrashort laser pulse. Bogatskaya, A.; Popov, A. // JETP Letters;Jun2013, Vol. 97 Issue 7, p388 

    The evolution of the electron energy distribution function in a plasma channel in a xenon plasma at atmospheric pressure created by radiation of a KrF femtosecond laser has been considered. It has been shown that, owing to the existence of the Ramsauer minimum in the transport scattering cross...

  • Optimizing Laboratory Experiments for Dynamic Astrophysical Phenomena. Ryutov, D. D.; Remington, B. A. // AIP Conference Proceedings;2006, Vol. 827 Issue 1, p341 

    To make laboratory experiments an efficient tool for the studying the dynamical astrophysical phenomena, it is desirable to perform them in such a way as to satisfy the scaling invariance with respect to the astrophysical system under study. Several examples are presented of such scalings in the...

  • Synergetic effects of double laser pulses for the formation of mild plasma in water: Toward non-gated underwater laser-induced breakdown spectroscopy. Sakka, Tetsuo; Tamura, Ayaka; Nakajima, Takashi; Fukami, Kazuhiro; Ogata, Yukio H. // Journal of Chemical Physics;5/7/2012, Vol. 136 Issue 17, p174201 

    We experimentally study the dynamics of the plasma induced by the double-laser-pulse irradiation of solid target in water, and find that an appropriate choice of the pulse energies and pulse interval results in the production of an unprecedentedly mild (low-density) plasma, the emission spectra...

  • Gas-temperature-dependent generation of cryoplasma jet under atmospheric pressure. Noma, Yuri; Choi, Jai Hyuk; Tomai, Takaaki; Terashima, Kazuo // Applied Physics Letters;9/8/2008, Vol. 93 Issue 10, p101503 

    Plasma with a gas temperature below room temperature is not yet fully understood although it is expected to be an attractive tool for applications to material processing. In the present work, gas-temperature-dependent generation of a cryoplasma jet was studied. So far, we have generated a helium...

  • Volatile organic compounds decomposition using nonthermal plasma coupled with a combination of catalysts. Zhu, T.; Wan, Y. D.; Li, J.; He, X. W.; Xu, D. Y.; Shu, X. Q.; Liang, W. J.; Jin, Y. Q. // International Journal of Environmental Science & Technology (IJE;Summer2011, Vol. 8 Issue 3, p621 

    A series of experiments were performed for toluene decomposition from a gaseous influent at normal temperature and atmospheric pressure by nonthermal plasma coupled with a combination of catalysts technology. Nonthermal plasma was generated by dielectric barrier discharge. γ-Al2O3 was used to...

  • Micro-Inactivation of Coliforms by Low-Temperature and Atmospheric-Pressure Plasma Irradiation. Hideyuki Takahashi; Satoshi Kurumi; Kaoru Suzuki; Katsushi Nishimura; Hideharu Hirose; Shigeyuki Masutani // Applied Mechanics & Materials;2015, Vol. 749, p74 

    In this study, we report on the inactivation technique to apply the oral surgery by micro low-temperature and atmospheric-pressure plasma irradiation utilizing a capillary nozzle. Emission spectrum of the micro-plasma showed OH and O radical, which were affected inactivation of coliform....

  • Intracellular effects of atmospheric-pressure plasmas on melanoma cancer cells. Ishaq, M.; Bazaka, K.; Ostrikov, K. // Physics of Plasmas;Dec2015, Vol. 22 Issue 12, p1 

    Gas discharge plasmas formed at atmospheric pressure and near room temperature have recently been shown as a promising tool for cancer treatment. The mechanism of the plasma action is attributed to generation of reactive oxygen and nitrogen species, electric fields, charges, and photons. The...

  • Probe diagnostics of strongly ionized inert-gas plasmas at atmospheric pressure. Baksht, F. G.; Mitrofanov, N. K.; Rybakov, A. B.; Shkol’nik, S. M. // Technical Physics;Jun98, Vol. 43 Issue 6, p660 

    The technique of probe measurements (experiment and theory) is applied in a dense, strongly ionized inert-gas plasma at atmospheric pressure. The measurements are performed in a high-current (250–550 A) free-burning argon arc with a thermionic cathode. As a control technique we used...

  • Discharge phenomena of an atmospheric pressure radio-frequency capacitive plasma source. Park, Jaeyoung; Henins, I.; Herrmann, H. W.; Selwyn, G. S.; Hicks, R. F. // Journal of Applied Physics;1/1/2001, Vol. 89 Issue 1, p20 

    Discharge phenomena of a nonthermal atmospheric pressure plasma source have been studied. An atmospheric pressure plasma jet (APPJ) operates using rf power and produces a stable homogeneous discharge at atmospheric pressure. After breakdown, the APPJ operation is divided into two regimes, a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics