Laser beam processing machine

TL;DR: In this paper, a laser processing apparatus comprising a chuck table, laser beam irradiation means for irradiating a workpiece held on the chuck table with a laser beam, and processing feed means for processing-feeding the chuck tables and the laser beams relative to each other.

TL;DR: In this paper, the relation between the wavelength of the pulsed laser beam and the pulse width generating no cracks is determined by experiment on the basis of the absorption edge of the workpiece, thereby setting the processing conditions.

TL;DR: In this paper, the authors present a laser condensing optical system which includes a laser beam source, a condensing system which is arranged between the beam source and a medium and condenses the laser beam in the medium, and a laser divergence point moving unit, which can move the position of the divergence point along an optical axis of the beam along with the refractive index.

TL;DR: In this article, a method for the laser-based machining of a sheet-like substrate, in order to separate the substrate into multiple portions, in which the laser beam of a laser for machining the substrate is directed onto the latter, is characterized in that, with an optical arrangement positioned in the path of rays of the laser, an extended laser beam focal line, seen along the direction of the beam, is formed on the beam output side of the optical arrangement from the laser beamed onto the substrate, such that an induced absorption is produced in the material of the

TL;DR: In this article, the authors present a method for cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, where a pulse laser beam is radiated on the predetermined cut line, and a modified area is formed inside the work along the determined cut line by moving the condensed point along the predetermined cutoff point, whereby the work can be cut with a rather small force by starting from the modified area.

TL;DR: In this article, a diode-pumped solid-state laser (52) of a laser system (50) provides ultraviolet Gaussian output (54) that is converted by a diffractive optical element (90) into shaped output (94) having a uniform irradiance profile.

TL;DR: In this article, a multifocal birefringent lens system is described together with applications of the lens system such as ophthalmic lenses (including those of the intraocular, contact and spectacle type) and optical instruments and devices including photographic cameras, telescopes, microscopes, copiers, spectrographic instruments, etc.

TL;DR: In this paper, a fundamental wave is used without putting laser light into a non linear optical element, and laser annealing is conducted by irradiating a semiconductor thin film with pulsed laser light having a high repetition rate.