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 . <EOS>