Defect formation and mitigation during laser powder bed fusion of copper
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The feasibility of a new, 2-laser, isotope sepn. scheme was tested. The 1st laser induces isotopically selective condensation in the collisional region of a free jet of SF6 dild. in Ar. Thus, a mol. beam contg. non-clustered 32SF6 and clustered 34SF6{m}Ar{ ...
The laser-induced pyrolytic deposition of Pt spots on glass was studied for different laser powers, beam diams., and irradn. time. Laser powers up to 500 mW give deposition rates of typically 0.5 mm/s. Temp. calcns. as a function of time allows one to stud ...
Laser induced photolytic and pyrolytic deposition spots on silicon are studied for different laser powers, partial pressure and deposition time. In the photolytic case at low powers, the reaction takes place in the adsorbed phase on the surface, whereas at ...
Microscopic ohmic contacts are made by laser chem. vapor deposition of platinum on a Pyrex substrate. The elec. cond. of the deposited metal stripes is measured as a function of the laser power, the writing speed, and the organometallic vapor pressure. The ...
The measurement of the tokamak plasma ion temperature can be obtained by collective Thomson scattering. This method requires a far infrared laser to achieve useful spatial resolution for typical tokamak plasma parameters. The very low Thomson scattering cr ...
The deposition of Ga on quartz substrates by photodissociation of trimethylgallium has been investigated. Light from a frequency doubled Ar-ion laser beam (257.2 nm) was focused onto quartz substrates. The Ar-ion laser was operated under CW or mode-locking ...
SF6 in a free jet was vibrationally excited by a continuous-wave CO2 laser. The subsequent energy transfer processes, in which vibrational energy is degraded, lead to changes in the beam's spatial, velocity and cluster-size distributions. These changes wer ...
Laser generated defects in (Al,Ga) As have been investigated by photochemical wet etching and TEM measurements. Photoetching reveals a 500 nm wide zone in the center of the processed area where according to laser power either a luminescent or a nonradiativ ...
Springer-Verlag (Springer Series in Chemical Physics 39)1984
The efficiency of classical gas-dynamic isotope sepn. can be strongly improved with the aid of a relatively weak IR laser. Irradn. in the collisional region of a free jet of SF6 dild. in Ar with a 20-W CO2 laser leads to an increase in the overall enrichme ...
A laser-induced depostion technique is used to produce platinum interconnection lines for microelectronic applications. The influence of the laser power as well as the vapor pressure of the precursor upon the geometry, the morphol. and the line resistivity ...