By Vjaceslav Avilov, André Schneider, Marco Lammers, Andrey Gumenyuk, Michael Rethmeier A well-known problem of partial penetration laser beam welding is keyhole-tip instability representing the main source of porosity – gas bubbles leave the keyhole near its tip. The second important problem of keyhole mode laser welding is very intensive thermocapillary (Marangoni) convection in the upper […]
Laser Insights
Novel Fusion Welding Technology of Si/Glass Using Ultrashort Laser Pulses with High Pulse Repetition Rates
By I. Miyamoto, Y. Okamoto, A. Hansen, T. Amberla, J. Vihinen, J. Kangastupa Silicon/glass is one of the most widely used material combinations for sensing and actuating microsystems and micro electronic technologies. Anodic bonding has been most widely used for Si/glass bonding since its invention in 1969, because of its excellent mechanical properties and process […]
The Difference Between Fiber Lasers and Fiber Delivered Lasers
By Tony Hoult Nobody would disagree that real change is occurring in the laser industry. In the broadest context, what is happening is a shift from the conventional technique of assembling lasers using free space optical components to a technique based on splicing together fiber based components. It is now very widely accepted that this […]
In-Depth Insights Into the New ANSI Z136.8!
Laser use in the dynamic world of research, development, and testing can present quite the challenge to Laser Safety Officers (LSOs). From the production of non-certified home-built lasers to fiber lasers to ensuring utilization of proper eye wear and alignment techniques, a research and development (R&D) LSO must be able to adapt to each situation that arises! ANSI Z136.8 […]
Laser Surface Texturing of Biomaterials
By Antonio Riveiro, Ramón Soto, Rafael Comesaña, Mohamed Boutinguiza, Jesús del Val, Félix Quintero, Fernando Lusquiños, Juan Pou One of the main requirements of a bone implant is to be able to withstand severe mechanical conditions during the required lifetime of the component. Nevertheless, the success of a bone implant relies upon the quality of the […]