Method of making a modification in or on a multiphase transparent workpiece using laser processing; a multiphase composite material

摘要

The present invention contemplates a method of making a modification (14) in or on a transparent workpiece (2) using a laser processing apparatus (1), wherein the workpiece ( 2) a short pulse or ultrashort pulse laser (10) emitting a laser beam (12) having a wavelength in the transmission range of 2) and a beam forming optical system (in particular for focusing the laser beam) 11) and a transparent workpiece (2) made of a material having a plurality of phases, wherein at least two phases of the plurality of phases have different relative dielectric constants. And one of these phases is a phase encapsulated in the form of particles, the encapsulated phase being substantially surrounded by the other phase and the cubic nanometer of the particles The product of the volume represented and the ratio of the absolute value of the difference between the two different dielectric constants to the relative dielectric constant of the surrounding phase is greater than 500, preferably greater than 1000, particularly preferably greater than 2000. Thus, the modification (14) in or on the transparent workpiece (2) extends more than a workpiece made of the same material that does not have a phase encapsulated in the form of particles. To achieve.