APPARATUS AND METHODS FOR LASER PROCESSING TRANSPA
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专利名称：APPARATUS AND METHODS FOR LASER PROCESSING TRANSPARENT WORKPIECES
USING PHASE SHIFTED FOCAL LINES
发明人：LIU, Anping,ROSS, Matthew Ryan
申请号：EP18706076.9
申请日：20180206
公开号：EP3580009A1
公开日：
20191218
专利内容由知识产权出版社提供
摘要：A method for laser processing a transparent workpiece includes forming a contour line having defects in the transparent workpiece, which includes directing a pulsed laser beam oriented along a beam pathway through a beam converting element and through a phase modifying optical element such that the portion of the pulsed laser beam directed into the transparent workpiece includes a phase shifted focal line having a cross-sectional phase contour that includes phase contour ridges induced by the phase modifying optical element and extending along phase ridge lines. Moreover, the phase shifted focal line generates an induced absorption within the transparent workpiece to produce a defect within the transparent workpiece including a central defect region and a radial arm that extends outward from the central defect region in a radial defect direction oriented within 20° of the phase ridge lines of the phase shifted focal line.
申请人：Corning Incorporated
地址：1 Riverfront Plaza Corning, New York 14831 US
国籍：US
代理机构：Elkington and Fife LLP 更多信息请下载全文后查看。