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Plasma Induced Surface Nanostructure on Semiconductors for the Application Of Random Laser
2022 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2022Unique surface nanostructures were formed on semiconductors over a large area by Ar plasma irradiation with RF sample bias. As an application of these wavelength ordered size structure, we have demonstrated a random laser emission at UV region.
Quan Shi +6 more
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Laser diagnostics for plasma surface interaction
Journal of Nuclear Materials, 1980Abstract The requirements on in situ diagnostics for the plasma surface interaction in tokamaks are analysed. From estimates of the detection limits needed to measure the densities of the various particle species taking part in the interaction on the one hand and from a discussion of the principles of laser induced fluorescence and of the properties ...
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Laser annealing of plasma-damaged silicon surface
Applied Surface Science, 2015Abstract 13.56 MHz capacitance coupled Ar plasma irradiation at 50 W for 120 s caused serious damage at SiO2/Si interfaces for n-type 500-μm-thick silicon substrates. The 635-nm-light induced minority carrier effective lifetime (τeff) was decreased from 1.7 × 10−3 (initial) to 1.0 × 10−5 s by Ar plasma irradiation.
T. Sameshima, M. Hasumi, T. Mizuno
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AIP Conference Proceedings, 1990
This paper is a review of different cases when surface laser plasma appears as the result of interaction of laser radiation with the matter. The conditions under which surface laser plasma formation occurs, such as combination of surface material and surrounding gas, intensity and frequency of laser radiation, etc. may vary, and so do the mechanisms of
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This paper is a review of different cases when surface laser plasma appears as the result of interaction of laser radiation with the matter. The conditions under which surface laser plasma formation occurs, such as combination of surface material and surrounding gas, intensity and frequency of laser radiation, etc. may vary, and so do the mechanisms of
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Surface modification of ZnO by plasma and laser treatment
Ferroelectrics, 2017ABSTRACTStructural and optical properties of zinc oxide thin films deposited on glass substrates were studied before and after plasma and laser treatment. It was shown that the polycrystalline ZnO structure was destroyed by modifying laser radiation, while in the center of the spot amorphous zinc oxide was formed.
V. P. Afanasjev +6 more
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Laser excitation of surface plasma waves over a diffuse plasma boundary
Physica Scripta, 2010The dispersion relation for surface plasma waves (SPWs) over a diffuse plasma layer is investigated in this paper. The layer is modeled by a stepwise profile. The phase velocity of an SPW increases sharply at larger layer thicknesses as well as at higher values of plasma density.
E Mishra, J Parashar, N K Gaur
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Plasma Energy Transfer to Metal Surfaces Irradiated by Pulsed Lasers
AIAA Journal, 1977Recent experimental data have indicated that when highly reflective metal targets are irradiated by pulsed lasers in an air environment, a larger fraction of the incident laser energy is coupled into the target when a plasma is ignited above the surface than when plasma formation does not occur.
A. PIRRI, R. ROOT, P. WU
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Laser Drilling and Plasma Formation at the Surface
2012In laser drilling process, plasma, consisting of charged ions, electrons, and neutral atoms is formed above the surface. Drilling process is effect by the size and transient nature of the surface plasma, since the plasma partially absorbs the incident radiation and acts like a heat source contributing to the drilling process.
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Probing of a surface plasma wave by an obliquely incident laser on the metal surface
Journal of Applied Physics, 2007A surface plasma wave (SPW) of frequency ω1 and wave number k1 propagating along a metal-free space boundary exerts a ponderomotive force on the free electrons, creating an electron density perturbation at frequency 2ω1. When a laser of frequency ω2 and wave number k2 is incident at a suitable angle on the metal surface, it gives rise to the ...
D. B. Singh, Gagan Kumar, V. K. Tripathi
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Surface Laser Plasma in Laser Treatment of Materials in High Pressure Gases
MRS Proceedings, 1991AbstractUsing holographic interferometry the surface laser plasma generation in high pressure gases has been investigated. Additional information about the generation of surface cover laser plasma, optical breakdown in the presence of aerosol particles and condensation front forming in high pressure gases is given.
A. Smirnov, C. Dupuy, G. Flamant
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