METHOD OF MANUFACTURING PATTERNED X-RAY OPTICAL ELEMENTS
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Dec 27, 2011
filing date -
Dec 27, 2011
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Abandoned
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Abstract
A pulsed laser beam engraves a groove pattern on substrate of material relatively transparent to the laser beam. The grooves of the pattern are filled with a filling material of different density or different electron density. The pattern of grooves filled with material of different density creates a spatial density modulation that forms the basic structure of various optical elements. By adjusting the flux density of the laser beam to exceed a material break-down threshold only in specific locations, the material ablation can be reduced to a diameter smaller than the diameter of the laser beam itself. The grooves fabricated in this manner can be filled with a deformable material under vacuum with subsequent exposure to air pressure or higher pressure. It is also possible to fill the grooves with nanoparticles of different density and secured by heat application or with a coating.
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