Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Lasers for Fast Internet in Space – Space Technology from Aachen

23.06.2015

On June 23, the second Sentinel mission was launched from the space mission launch center in Kourou. A critical component of Aachen is on board. Researchers at the Fraunhofer Institute for Laser Technology ILT and Tesat-Spacecom have jointly developed the know-how for space-qualified laser components. For the Sentinel mission the diode laser pump module of the Laser Communication Terminal LCT was planned and constructed in Aachen in cooperation with the manufacturer of the LCT, Tesat-Spacecom, and the Ferdinand Braun Institute.

After eight years of preparation, in the early morning of June 23 the time had come: in Kourou in French Guiana, the European Space Agency launched the Sentinel-2A satellite aboard a VEGA launcher.


Ready for lift-off: Vega launcher rocket.

ESA-M. Pedoussaut, 2015


Diode-laser pump module for the laser communications terminal (LCT) of TESAT Spacecom.

Fraunhofer ILT, Aachen

It is the first of two satellites which will be used to improve environmental monitoring under the European Copernicus program. To transfer the extensive image data, a new technology is being used: The data are sent to a relay satellite with a laser beam and sent from there to the ground station.

Both Sentinel-2 satellites will monitor the status of forests and farmland from space. It should also provide data on the pollution of lakes and coastal waters. Its images of floods, volcanic eruptions and landslides will be a great help to react quickly in case of disaster and to coordinate humanitarian assistance more efficiently.

In 2014 the European Space Agency ESA established a fast data connection between near-Earth satellites and those more remote. Cutting-edge laser technology enables a transfer rate of up to 1.8 Gbit/s over a maximum of 40,000 km, which is about 30 times faster than what has previously been possible. This monitoring system for environment and security, where time play a critical role, is seen as an application like the European Copernicus program.

The technology for the ground-breaking data link comes from Germany: the so-called Laser Communication Terminal (LCT) was developed by the Space Administration of the German Aerospace Center (DLR) with funds from the Federal Ministry of Economics and Technology (BMWi) and Tesat-Spacecom in charge. In collaboration with Tesat-Spacecom, Fraunhofer ILT planned, qualified and mounted the space-ready diode-laser pump module.

From conception to design, manufacture and testing, Fraunhofer ILT provides all the expertise for the development of laser and optical modules for use in the aerospace industry. This know-how is based on decades of experience in various missions and research projects.

Fraunhofer as a system provider for space components

The Fraunhofer ILT is member of the Fraunhofer Alliance for Space, a consortium of 15 institutions that operate in the field of applied research for space technology.

Contact

Dipl.-Ing., Dipl.-Wirtsch.-Ing. Martin Traub
Group Leader Optics Design and Diode Lasers
Telephone +49 241 8906-342
martin.traub@ilt.fraunhofer.de
Fraunhofer Institute for Laser Technology ILT
Steinbachstraße 15
52074 Aachen, Germany

Hans-Dieter Hoffmann
Leader of the competence area Lasers and Laser Optics
Telephone +49 241 8906-206
hansdieter.hoffmann@ilt.fraunhofer.de
Fraunhofer Institute for Laser Technology ILT
Steinbachstraße 15
52074 Aachen, Germany

Weitere Informationen:

http://www.ilt.fraunhofer.de/en.html

Petra Nolis | Fraunhofer-Institut für Lasertechnik ILT

More articles from Physics and Astronomy:

nachricht What happens when we heat the atomic lattice of a magnet all of a sudden?
18.07.2018 | Forschungsverbund Berlin

nachricht Subaru Telescope helps pinpoint origin of ultra-high energy neutrino
16.07.2018 | National Institutes of Natural Sciences

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Machine-learning predicted a superhard and high-energy-density tungsten nitride

18.07.2018 | Materials Sciences

NYSCF researchers develop novel bioengineering technique for personalized bone grafts

18.07.2018 | Life Sciences

Why might reading make myopic?

18.07.2018 | Health and Medicine

VideoLinks
Science & Research
Overview of more VideoLinks >>>