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Cremers; David A.
Los Alamos, NM
No. of patents:

Patent Number Title Of Patent Date Issued
5837960 Laser production of articles from powders November 17, 1998
Method and apparatus for forming articles from materials in particulate form in which the materials are melted by a laser beam and deposited at points along a tool path to form an article of the desired shape and dimensions. Preferably the tool path and other parameters of the deposi
4925307 Apparatus and method for the spectrochemical analysis of liquids using the laser spark May 15, 1990
A method and apparatus for the qualitative and quantitative spectroscopic investigation of elements present in a liquid sample using the laser spark. A series of temporally closely spaced spark pairs is induced in the liquid sample utilizing pulsed electromagnetic radiation from a pair o
4780608 Laser sustained discharge nozzle apparatus for the production of an intense beam of high kinetic October 25, 1988
Laser sustained discharge apparatus for the production of intense beams of high kinetic energy atomic species. A portion of the plasma resulting from a laser sustained continuous optical discharge which generates energetic atomic species from a gaseous source thereof is expanded through
4561777 Apparatus and method for quantitative determination of materials contained in fluids December 31, 1985
Apparatus and method for near real-time in-situ monitoring of particulates and vapors contained in fluids. Initial filtration of a known volume of the fluid sample is combined with laser-induced dielectric breakdown spectroscopy of the filter employed to obtain qualitative and quantitati
4544274 Apparatus and method for measurement of weak optical absorptions by thermally induced laser puls October 1, 1985
The thermal lensing phenomenon is used as the basis for measurement of weak optical absorptions when a cell containing the sample to be investigated is inserted into a normally continuous-wave operation laser-pumped dye laser cavity for which the output coupler is deliberately tilted rel
4447153 Apparatus and method for quantitative measurement of small differences in optical absorptivity b May 8, 1984
An apparatus and method for the measurement of small differences in optical absorptivity of weakly absorbing solutions using differential interferometry and the thermooptic effect has been developed. Two sample cells are placed in each arm of an interferometer and are traversed by co

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