نتایج جستجو برای: laser beam cutting

تعداد نتایج: 321687  

2009
J C Hernandez - Castaneda H K Sezer

This paper reports a statistical analysis of the laser wood cutting process. The laser cutting of wood is a multi-factor process and correct combination of the parameters involved is needed to achieve high quality and optimum process efficiency. In this paper a design of experiments and statistical modelling approach is used to investigate the significant process parameters by consideration of ...

ژورنال: سنجش و ایمنی پرتو 2020

Lasers can produce a beam of light of such intensity that permanent damage to human tissue, in particular the retina of the eye, can be caused instantaneously, even at distances of over 10 km. At lower intensities, laser beams can seriously affect visual performance without causing physical damage to the eyes; causing transient damage or causing sensation and loss of focus. Laser illumination o...

Journal: :JOURNAL OF THE JAPAN WELDING SOCIETY 2012

2008
Xu Bin Li Fangfei Lin Zongjian

Laser footprint size and beam divergence angle tuning was found to affect LiDAR data accuracy and measurement precision because of beam axis shifting. The laser beam divergence angle is generally tunable in modern LiDAR systems in order to adapt to different application scenarios. Beam divergence angle can either be switched from one position to the other (i.e. 0.3mRad / 0.8 mRad), or be tuned ...

Journal: :Physics Procedia 2012

Journal: :Optics Letters 2021

We demonstrate curved modifications with lengths of up to 2 mm within borosilicate glass produced by single 1030 nm picosecond laser shots an Airy beam profile. Plasma ignition in the side lobes as well surface damage prove be crucial limitations for confined bulk energy deposition on a trajectory. A combined experimental and numerical analysis reveals optimum parameters deposition. This way we...

2010
Mumtaz Sheikh Philip Marraccini Nabeel A. Riza

Precise knowledge of laser beam parameters is a key requirement in many photonics applications including for lasers and optics used in the transportation industry. This paper reports on a novel motion-free laser beam characterization system using electronically agile digital and analog photonics such as a Digital Micromirror Device (DMD) and an analog variable focal length lens. The proposed sy...

Journal: :Journal of the Japan Welding Society 1993

2007
Ronald S. Boris Daniel Eun Akshay Bhandari Kathryn Lyall Mahendra Bhandari Craig Rogers Osama Alassi Mani Menon

A potassium-titanyl-phosphate (KTP) laser through robotic endo-wrist instrument has been evaluated as an ablative and hemostatic tool in robotic assisted laparoscopic partial nephrectomy (RALPN). Ten RALPN were performed in five domestic female pigs. The partial nephrectomies were performed with bulldog clamping of the pedicle. Flexible glass fiber carrying 532-nm green light laser was used thr...

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