2023年9月1日 · In this paper, the application of beam shaping technology in two mainstream metal laser AM processes (laser powder bed fusion (LPBF) and directed energy deposition (DED)) is systematically reviewed, including the energy distribution, melt pool morphology and part quality of different shaped beams.

A laser beam shape is typically defined by its irradiance distribution and phase. The latter is essential in determining the uniformity of a beam profile over its propagation distance. Therefore, beam shapers are designed to redistribute the irradiance and phase of an optical beam to attain a desired beam profile that is maintained along the ...

A laser beam shape is typically defined by its irradiance distribution and phase. The latter is essential in determining the uniformity of a beam profile over its propagation distance. Therefore, beam shapers are designed to redistribute the irradiance and phase of an optical beam to attain a desired beam profile that is maintained along the ...

2000年1月1日 · Laser beam shaping techniques can be divided in to three areas: apertured beams, field mappers, and multi-aperture beam integrators. An uncertainty relation exists for laser beam shaping...

2023年6月25日 · In laser-based powder bed fusion of metals (PBF-LB/M), the laser beam shape significantly influences the temperature distribution and melt pool dimensions. Recent advances in beam shaping technology allow for more flexibility in …

The theory of geometrical methods for design of a laser beam shaping system is summarized in section 2. A brief overview is presented of the optical design process of incorporating the geometrical optics intensity law for propagation

) laser beam into a flattop one. While an aspheric beam shaper can make a circular flattop, a diffractive one can realize much flex-ibility in output beam shapes, like square, rectangular, linear, or other complex beam shapes. The beam shap-ing is often combined with a scanning optical system, consisting of galva-nometric mirrors and an f-theta ...

2023年5月15日 · The characteristic properties of a laser beam can be modified by beam-shaping techniques to meet the demands of specific applications.

Geometrical optics is used to shape the irradiance profile as part of the optical design of laser beam shaping systems. The laws of reflection and/or refraction, ray tracing, conservation of energy within a bundle of rays, and constant optical path length condition are used to design laser beam profile shaping optical systems.

Edmund Optics offers Laser Beam Shaping solutions to collimate laser beams, transform beam profiles, convert beam shapes, and much more. Flat Top Beam Shapers, used to convert Gaussian beams into flat top beams with a uniform intensity distribution, are available optimized for laser wavelengths associated with Nd:YAG, fiber, and CO 2 Lasers.