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Gottingen, Germany

Van Der Wilt P.C.,Coherent LaserSystems GmbH
Digest of Technical Papers - SID International Symposium | Year: 2014

Recent commercial success of high-resolution AMLCDs and AMOLED displays has led to accelerated adoption and scale-up of ELA, the preferred technique for creating LTPS films. Here, key aspects of the process are discussed; in particular, the formation of laser-induced periodic surface structures (LIPSS) and the super-lateral growth (SLG) phenomenon. Also, a novel upright-microscopy technique is described for characterization of ELA-processed films. © 2014 Society for Information Display. Source

Barke S.,Leibniz University of Hanover | Wang Y.,Leibniz University of Hanover | Wang Y.,University of Western Australia | Esteban Delgado J.J.,Leibniz University of Hanover | And 4 more authors.
Classical and Quantum Gravity | Year: 2015

The most promising concept for low frequency (millihertz to hertz) gravitational wave observatories are laser interferometric detectors in space. It is usually assumed that the noise floor for such a detector is dominated by optical shot noise in the signal readout. For this to be true, a careful balance of mission parameters is crucial to keep all other parasitic disturbances below shot noise. We developed a web application that uses over 30 input parameters and considers many important technical noise sources and noise suppression techniques to derive a realistic position noise budget. It optimizes free parameters automatically and generates a detailed report on all individual noise contributions. Thus one can easily explore the entire parameter space and design a realistic gravitational wave observatory. In this document we describe the different parameters, present all underlying calculations, and compare the final observatory's sensitivity with astrophysical sources of gravitational waves. We use as an example parameters currently assumed to be likely applied to a space mission proposed to be launched in 2034 by the European Space Agency. The web application itself is publicly available on the Internet at http://spacegravity.org/designer. Future versions of the web application will incorporate the frequency dependence of different noise sources and include a more detailed model of the observatory's residual acceleration noise. © 2015 IOP Publishing Ltd. Source

Paetzel R.,Coherent LaserSystems GmbH
Conference on Lasers and Electro-Optics Europe - Technical Digest | Year: 2015

Low-Temperature Polycrystalline Silicon (LTPS) is the enabling backplane technology for AMOLED displays and small to medium sized high-resolution AMLCDs. Progress on Excimer Laser Annealing towards large-scale production of LTPS is described. © 2015 OSA. Source

Delmdahl R.,Coherent LaserSystems GmbH | Patzel R.,Coherent LaserSystems GmbH
Journal of Physics D: Applied Physics | Year: 2014

State-of-the art pulsed UV excimer laser technology has a proven track record of stable performance under three-shift operation conditions in various industrial thin-film applications at stabilized pulse energy levels ranging from 100 to 1000 mJ per pulse. For the last 25 years excimer laser technology has formed the backbone of pulsed laser deposition advances. The available UV average power level nowadays exceeds 1 kW and novel excimer laser beam utilization schemes in combination with sophisticated substrate-target geometries are ready to utilize the full laser upscaling potential and thereby reduce unit costs. © 2014 IOP Publishing Ltd. Source

Orr B.J.,Macquarie University | Delmdahl R.,Coherent LaserSystems GmbH | Fechner B.,Coherent LaserSystems GmbH
Optical Instrumentation for Energy and Environmental Applications, E2 2014 | Year: 2014

The use of high-energy ultraviolet excimer laser pulses to fabricate high-temperature semiconductors will be reviewed. Applications include new-generation magnetic resonance imaging instruments for medicine and low-loss electrical cables for smart grid technology. © OSA 2014. Source

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