Sep 5, 2024 · The Laser Beam Caustic is the envelope that limits the extension of the Gaussian beam. This is particularly important in industrial application where lasers are used as a replacement of mechanical drills to cut, and weld different materials.

The caustic is a curve or surface to which each of the light rays is tangent, defining a boundary of an envelope of rays as a curve of concentrated light. [2] In some cases caustics can be seen as patches of light or their bright edges, shapes which often have cusp singularities.

May 25, 2023 · What is caustic of laser beam? The caustic represents the path of the beam diameter coming from the processing optic to the focus and after it. A significant parameter for laser material processing is so-called depth of focus, defined as Rayleigh length. It states the distance from the focus at which the area of the beam cross-section has doubled.

In this paper the performance of a novel direct diode laser (DDL) with increased beam quality is documented for both fusion and flame cutting and compared... ... with different powers and...

One of the common issues in the laser cutting process is the local heating of the optical components due to contamination and/or high powers commonly employed, which cause shifting of...

For this purpose, laser and process parameters (e.g. pulse duration, cutting speed, repetition rate, beam caustic) as well as geometric features of the specimen such as tip radius or strut width are varied to reveal their influence on the material during cutting. 1. Introduction.

The caustic represents the path of the beam diameter coming from the processing optic to the focus and after it. A significant parameter for laser material processing is so-called depth of focus, defined as Rayleigh length.

Using zoom optics, a complete caustic of the focused laser beam can be measured. During material processing, the backscattered light can be used for simultaneous control of the laser beam quality. The measurement system is directly linked with the laser controller.

A laser-material interaction parameter within the range of 599 ≤ α ≤ 400 J.s g⁻¹ mm⁻¹ imparted optimum characteristics of microstructure, microhardness and corrosion resistance.

Definition of Beam Caustic: The envelope of the intensity distribution which encloses the region where the laser beam radiation is concentrated.