Patent ID: 9636773
Date: 2017-05-02
CPC Classifications: B23K,B28D,B29C,B29K,B81B,B81C,C03B,C03C,Y10T

Claim:
1. A method of scribing a transparent material, comprising: using a single pass of a focused beam of ultrashort laser pulses to create a surface groove in said material and at least one modified region within the bulk of said material during motion of said transparent material relative to said focused laser beam, wherein an intensity of said focused beam produces non-linear absorption within a material region, and said ultrashort pulses are generated at a repetition rate sufficiently high such that spatial overlap between said pulses, and interaction between said laser pulses and a modified region, creates at least one additional region of material modification within the material, wherein said surface groove and said at least one modified region are each formed by interaction of said focused beam with said material, said surface groove in said material and said at least one modified region within the bulk being formed along a beam propagation direction, and wherein said surface groove and said at least one modified region are discontinuous and separated in depth.