Articles techniques et présentations

Applications of mid-infrared photonic technologies are fueled by innovative advances in quantum cascade lasers, and other key optical components like MEMS gratings and fiber-optics. The integration of devices into optoelectronic packages for stable operation at high powers poses also ... En savoir plus

Laser material processing at micro-meter domain can be used for a plethora of applications such as micro drilling, micro welding, micro cutting, micro-texturing as well as micro polishing. These processes are governed by the time varying, complex melt hydrodynamics courtesy of melting ... En savoir plus

Attosecond light pulses have revolutionized our view of fundamental atomic, molecular and solid state processes in the attosecond - femtosecond time domain [1]. The availability of such pulses is based on high-order harmonic generation (HHG) in noble gas samples by a femtosecond laser ... En savoir plus

The heat and fluid flow calculation inside the melt pool in welding processes is a complex challenge. It can be useful to predict defects in the weld seam or to study the influence of some process parameters. Even if the required equations are mastered over the last few years, the cost ... En savoir plus

Accurate tissue mechanical properties are essential for simulating medical devices that deform skin under suction, such as devices for the treatment of fat, skin wounds, and vascular skin conditions. While suction-based methods exist for estimating these properties, most rely on small ... En savoir plus

This study explores the significance of the recoil pressure, Marangoni convection and surface tension effects in selective laser melting of Ti-6Al-4V. A pragmatic two dimensional model with appropriate powder distribution over a substrate of finite thickness has been developed in COMSOL ... En savoir plus

The low dimensional systems show a behavior that is strongly depending on external effects such as the intense non-resonant laser field. The control of electronic and optical properties by means of a laser field lets us to adapt the matter-light interaction to several applications [1]. ... En savoir plus

Surface engineering is a key technology used in a wide range of sectors in industry. Among other techniques, it involves adding functionality to a surface. This can be performed by creating a specific topography to a surface using laser texturing. The objective of the work presented in ... En savoir plus

We present a modeling software package developed at Ostendo Technologies for analysis and design of semiconductor laser and light-emitting diodes. The current database of material parameters supports complete group of III-Nitride alloys used in visible spectrum applications and can be ... En savoir plus

Synthetic jet actuators enhance flow control by generating pulsatile jets with zero net mass flux. There is a need to develop a computationally inexpensive model that can generate optimal geometric actuator designs of maximum jet performance. This work investigates the multi-physics ... En savoir plus