Abstract: A method and system for removing organic deposits from the surface of sand particles. The organic deposits include molding compound and carbonaceous materials which are deposited on sand particles during their use in foundry operations. The organic deposits are exposed to a laser beam having a wavelength which is selectively absorbed by at least a portion of the organic deposits, while being essentially transmitted by the sand particles. The organic deposits are selectively heated by the laser beam resulting in vaporization and/or decomposition of the deposits without significant heating of the underlying sand particles.

Abstract: Process for electrically connecting non-planar electronic elements to a motherboard. A radiation sensitive metallic conversion compound is applied as a coating which extends at least between electrical connection sites on the electronic element and motherboard. The metallic conversion coating is then selectively irradiated by laser to convert the coating into a metallic electrical connection which extends between the non-planar electronic element and motherboard.

Abstract: A method of fabricating a polarizing dish antenna reflector (10) wherein a light source (22) is employed to pyrolyze an organometallic compound (14) disposed on the antenna surface to form grid elements (24) directly thereon. The surface of the parabolic dish antenna reflector (10) is coated with an organometallic compound (14) that comprises a metallic component such as gold, silver, copper chrome, or other suitable metal. The coated surface may be conditioned by depositing a surface film of polyimide, or the like. The coated surface is then pyrolyzed by using a high intensity focussed light source (22), such as a laser or discharge lamp to form metal grid lines (24) on the surface. The light source (22) is scanned across the surface to create parallel scan lines, or the light source may be fixed and the reflector surface can be moved relative to the light source (22) using a computer controlled XY table (16), or the like.