| 摘要 |
A method of forming a cut which encloses a partial volume within a transparent material, by generating optical breakthroughs in the material by means of laser radiation focused into the material along an optical axis in which the focal point is three-dimensionally adjusted so as to form the cut by serial arrangement of the optical breakthroughs, wherein the focal point is adjusted along a spatial spiral, which is located in the cut and extends along a main axis that is at substantially right angles to the optical axis.
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