摘要：【中文】本发明涉及一种脆性材料激光切割装置及方法，包括激光器、扩束系统、光阑孔、锥透镜、准直透镜以及物镜；激光器能够输出高斯激光光束，扩束系统、光阑孔、锥透镜、准直透镜以及物镜被设置在激光的光路上；输出的高斯激光光束依次射入扩束系统和光阑孔，高斯激光光束经过该扩束系统扩束，将激光光斑直径扩大；再经过光阑孔，控制光斑的能量分布；再经过锥透镜将高斯激光光束转换成贝塞尔激光光束，再射入准直透镜，形成环形光，再经过物镜聚焦，形成聚焦后贝塞尔激光光束作用在脆性材料上进行切割操作。利用本发明的激光切割装置在满足脆性材料的切断面的粗糙度要求同时也能满足对激光强度的控制要求，切割出合适形状的切断面粗糙度的脆性材料。 【EN】The invention relates to a brittle material laser cutting device and a brittle material laser cutting method, wherein the brittle material laser cutting device comprises a laser, a beam expanding system, a diaphragm hole, a conical lens, a collimating lens and an objective lens; the laser can output Gaussian laser beams, and the beam expanding system, the diaphragm hole, the conical lens, the collimating lens and the objective lens are arranged on a laser light path; the output Gaussian laser beam is sequentially emitted into a beam expanding system and a diaphragm hole, and the Gaussian laser beam is expanded by the beam expanding system to expand the diameter of a laser spot; then the light beam passes through a diaphragm hole to control the energy distribution of the light spots; and the focused Bessel laser beam acts on the brittle material to perform cutting operation. The laser cutting device of the invention can meet the requirements of the roughness of the cut surface of the brittle material and the control requirement of the laser intensity, and cut the brittle material with the cut surface roughness of a proper shape.