Laser processing of a multi-phase transparent material, and multi-phase composite material

A composite material, comprising regions of a first phase having a dielectric constant εr1, regions of at least one second phase having a dielectric constant εr2, which dielectric constants εr1 and εr2 differ from one another;

• wherein the product of the volume, specified in cubic nanometers, of a region of the at least one second phase and the ratio of the dielectric constants of the first phase and the at least one second phase reduced by the value of one is greater than five hundred, wherein the dielectric constant of the first phase εr1 is greater than or equal to the dielectric constant of the at least one second phase εr2, and wherein at least one linear modification defined by defects forming a channel of defects of at least 500 micrometers in length extends inside the composite material, wherein the at least one second phase is substantially spherical in shape.

A composite material, comprising regions of a first phase having a dielectric constant εr1, regions of at least one second phase having a dielectric constant εr2, which dielectric constants εr1 and εr2 differ from one another;

• wherein the product of the volume, specified in cubic nanometers, of a region of the at least one second phase and the ratio of the dielectric constants of the first phase and the at least one second phase reduced by the value of one is greater than five hundred, wherein the dielectric constant of the first phase εr1 is greater than or equal to the dielectricconstant of the at least one second phase εr2, and wherein at least one linear modification defined by defects forming a channel of defects of at least 500 micrometers in length extends inside the composite material, wherein the at least one linear modification formed by defects is defined by a plurality of defects arranged along the channel, wherein the lengths of the defects increase with increasing distance from a surface of the composite material.