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PHASE-MODIFIED QUASI-NON-DIFFRACTING LASER BEAMS FOR HIGH ANGLE LASER PROCESSING OF TRANSPARENT WORKPIECES
PHASE-MODIFIED QUASI-NON-DIFFRACTING LASER BEAMS FOR HIGH ANGLE LASER PROCESSING OF TRANSPARENT WORKPIECES
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机译:用于高角度激光加工的相位改进的准非衍射激光束透明工件
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摘要
A method for processing a transparent workpiece that includes directing a laser beam into the transparent workpiece. A portion of the laser beam directed into the transparent workpiece comprises a laser beam focal line and generates an induced absorption to produce a defect within the transparent workpiece. The laser beam focal line includes a wavelength λ, a spot size wo, a Rayleigh range ZR that is greater than FD [Formula 1] where FD is a value of 10 or greater, and an internal focal line angle of greater than 10°. The laser beam focal line further comprises a circular angular spectrum within the transparent workpiece and a plurality of rays. Each individual ray of the plurality of rays has a same phase, ϕ, when converging to form the circular angular spectrum within the transparent workpiece.
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机译:一种用于处理透明工件的方法,包括将激光束引入透明工件。 导向透明工件的激光束的一部分包括激光束焦线,并产生诱导的吸收以在透明工件内产生缺陷。 激光束焦线包括波长λ,光斑尺寸 o sub>,大于fd的瑞利范围z r sub> [公式1 其中f d sub>值为10或更大,内部焦线角大于10°。 激光束焦线还包括透明工件和多个光线内的圆形角度谱。 当在聚合时,多个光线的每个单独的光线具有相同的相位φ,φ在透明工件内形成圆形角度谱。
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