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Mainz, Germany

Reinl S.,Dilas Diodenlaser GmbH
Physics Procedia | Year: 2013

Aside from conventional welding methods, laser welding of plastics has established itself as a proven bonding method. The component-conserving and clean process offers numerous advantages and enables welding of sensitive assemblies in automotive, electronic, medical, human care, food packaging and consumer electronics markets. Diode lasers are established since years within plastic welding applications. Also, soft soldering using laser radiation is becoming more and more significant in the field of direct diode laser applications. Fast power controllability combined with a contactless temperature measurement to minimize thermal damage make the diode laser an ideal tool for this application. These advantages come in to full effect when soldering of increasingly small parts in temperature sensitive environments is necessary. © 2013 The Authors. Source

Harrop N.,Dilas Diodenlaser GmbH
Biophotonics International | Year: 2011

A class of devices called high-power diode lasers (HPDLs) provides several advantages for surgeries in comparison with instrument-based surgery and other surgical lasers. The main advantage of HPDLs is that they offer a wide range of wavelengths, which makes them attractive instruments for surgery. One of the greatest benefits of an HPDL is that it can be directly modulated. There is no delay between the input of the operating surgeon and the emission of laser radiation when operating a surgical HPDL. The HPDL can easily be adjusted to any power level from 0 to 100 percent in addition to this advantage, allowing carefully dosed optical power, while solid-state lasers have threshold-based operating conditions that permit power modulation only between 60 and 100 percent. The range of wavelengths available makes the HPDL the perfect tool for a variety of medical applications, including surgery. Source

Horn W.,Dilas Diodenlaser GmbH
Key Engineering Materials | Year: 2010

Diode lasers have become an important tool for polymer welding in automotive industries, in medical and electronics manufacturing. High efficiency and well fitting beam quality make them a perfect tool for industrial applications. With adapted optics it is possible to fit the laser spot shape to the geometry of the work piece. Galvo scanners are the most flexible tool to apply local and precise dose of heat to the work piece. If this flexibility is not needed, the laser spot can be customized by optics to line, circular or arbitrary shaped geometries. For joining transparent parts either an absorbing layer or diode lasers with a wavelength of 1940 nm can be used. © (2010) Trans Tech Publications. Source

Piccoli R.,University of Swansea | Piccoli R.,University of Pavia | Robin T.,IXFiber S.A.S. | Brand T.,Dilas Diodenlaser GmbH | And 2 more authors.
Optics Express | Year: 2014

Al-silicate fibers have excellent manufacturing quality. Unfortunately, high-Yb doping concentration may be limited by severe losses induced by photodarkening phenomenon. In this paper we demonstrate for the first time that Al-silicate Yb-doped fibers with highinversion and doping concentration above 1 wt% can be successfully used by implementing a simple optical bleaching scheme. A co-injection into the active fiber of a few mW of light at around 550 nm wavelength successfully eliminates almost all photodarkening induced losses. We demonstrate operation at above 90% of the pristine output power level in several lasers with up to 30% Yb ions in the excited state. These results may allow to use Yb-doped Al-silicate fibers with doping level increased by one order of magnitude. Finally, we provide a comprehensive picture of main parameters affecting photobleaching performance and, to the best of our knowledge, we report the first quantitative measurement of the Ytterbium excited state absorption cross-section in the visible range. © 2014 Optical Society of America. Source

Neukum J.,Dilas Diodenlaser GmbH
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Diode lasers have a broad wavelength range, from the visible to beyond 2.2μm. This allows for various applications in the defense sector, ranging from classic pumping of DPSSL in range finders or target designators, up to pumping directed energy weapons in the 50+ kW range. Also direct diode applications for illumination above 1.55μm, or direct IR countermeasures are of interest. Here an overview is given on some new wavelengths and applications which are recently under discussion. In this overview the following aspects are reviewed: • High Power CW pumps at 808 / 880 / 940nm • Pumps for DPAL - Diode Pumped Alkali Lasers • High Power Diode Lasers in the range < 1.0 μm • Scalable Mini-Bar concept for high brightness fiber coupled modules • The Light Weight Fiber Coupled module based on the Mini-Bar concept Overall, High Power Diode Lasers offer many ways to be used in new applications in the defense market. © 2012 SPIE. Source

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