A drilling device comprising: a light source configured to provide a light beam; and a diffractive beam propagation device having a substantially planar surface; wherein: the light source is configured such that the light beam is incident on the planar surface of the diffractive beam propagation device; the diffractive beam propagation device comprises a circular diffraction grating being configured to propagate the light beam as one or more propagated beams such that the one or more propagated beams directly surround an area with a substantially circular shape by forming one or more cones; and wherein the drilling device further comprises a focusing system for focusing the one or more propagated beams on a substantially ringlike area, the focusing system having an optical axis, wherein the one or more propagated beams are incident on the focusing system and thereby become one or more direction-changed beams, and wherein the substantially ringlike area which is surrounded by the one or more propagated beams is perpendicular to an optical axis of the diffractive beam propagation device and/or the optical axis of the focusing system. a light source configured to provide a light beam; and a diffractive beam propagation device having a substantially planar surface; wherein: the light source is configured such that the light beam is incident on the planar surface of the diffractive beam propagation device; the diffractive beam propagation device comprises a circular diffraction grating being configured to propagate the light beam as one or more propagated beams such that the one or more propagated beams directly surround an area with a substantially circular shape by forming one or more cones; and wherein the drilling device further comprises a focusing system for focusing the one or more propagated beams on a substantially ringlike area, the focusing system having an optical axis, wherein the one or more propagated beams are incident on the focusing system and thereby become one or more direction-changed beams, and wherein the substantially ringlike area which is surrounded by the one or more propagated beams is perpendicular to an optical axis of the diffractive beam propagation device and/or the optical axis of the focusing system. the light source is configured such that the light beam is incident on the planar surface of the diffractive beam propagation device; the diffractive beam propagation device comprises a circular diffraction grating being configured to propagate the light beam as one or more propagated beams such that the one or more propagated beams directly surround an area with a substantially circular shape by forming one or more cones; and wherein the drilling device further comprises a focusing system for focusing the one or more propagated beams on a substantially ringlike area, the focusing system having an optical axis, wherein the one or more propagated beams are incident on the focusing system and thereby become one or more direction-changed beams, and wherein the substantially ringlike area which is surrounded by the one or more propagated beams is perpendicular to an optical axis of the diffractive beam propagation device and/or the optical axis of the focusing system.