Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The LZH develops a fiber amplifier for measuring gravitational waves in space

20.06.2014

When the European Space Agency (ESA) sends the “3rd Large Mission” into space in 2034, its goal will be to detect gravitational waves. Scientists at the Laser Zentrum Hannover e. V. (LZH) have now begun to develop fiber amplifiers for the required lasers.

The task of the Single-Frequency Laser Group of the LZH almost sounds trivial: The fiber amplifiers developed by this group should be used to post-amplify a special laser with a low output. However, the general framework of the project eLISA makes laser development a real challenge: The choice of optical components that can be used is highly limited.


In the project eLISA, a mother satellite sends laser beams to two daughter satellites. From the returning beams, gravitational waves should be calculated.

Illustration: AEI/MM/exozet

Challenge: Simple and fit for use in space

Since the availability of resources in space is very limited, the amplifier in planning must work very efficiently”, says the head of the group Dr. Peter Weßels, when addressing the task. “At the same time, the setup must be kept as simple as possible, so the laser can be qualified for use in space.”

... more about:
»LZH »Laser »Space »fiber »gravitational »movements »satellite »waves

Detecting miniscule movements over enormous distances

Despite the high limitations, the laser must provide high performance. The laser beam must travel over a distance of around one million kilometers between the mother satellite and both daughter satellites. Once it arrives, the beam is regenerated and sent back the same distance.

The differences in the phase of the returning light can be used to conclude distance changes in space on the subatomic scale, the gravitational waves.

The scientists working with Dr. Peter Weßels want to develop a so-called „Engineering Qualification Modell“ within the next three years. Such a model is not yet completely ready for use in space, but the setup and design is quite similar to the later model.

Apart from the LZH, the Fundação Faculdade de Ciências da Universidade de Lisboa, Portugal, and the Czech Space Research Centre s.r.o., Czech Republic, are working on the development of the laser system for the eLISA mission. The developmental project is headed by the Portuguese company LusoSpace Lda.

Weitere Informationen:

https://www.elisascience.org/ - eLISA website
https://www.elisascience.org/multimedia/image/elisa-spacecraft-two-laser-arms - illustration source

Lena Bennefeld | idw - Informationsdienst Wissenschaft

Further reports about: LZH Laser Space fiber gravitational movements satellite waves

More articles from Physics and Astronomy:

nachricht UNH scientists help provide first-ever views of elusive energy explosion
16.11.2018 | University of New Hampshire

nachricht NASA keeps watch over space explosions
16.11.2018 | NASA/Goddard Space Flight Center

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: UNH scientists help provide first-ever views of elusive energy explosion

Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.

Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...

Im Focus: A Chip with Blood Vessels

Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.

Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...

Im Focus: A Leap Into Quantum Technology

Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.

In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...

Im Focus: Research icebreaker Polarstern begins the Antarctic season

What does it look like below the ice shelf of the calved massive iceberg A68?

On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.

Im Focus: Penn engineers develop ultrathin, ultralight 'nanocardboard'

When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure

Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“3rd Conference on Laser Polishing – LaP 2018” Attracts International Experts and Users

09.11.2018 | Event News

On the brain’s ability to find the right direction

06.11.2018 | Event News

European Space Talks: Weltraumschrott – eine Gefahr für die Gesellschaft?

23.10.2018 | Event News

 
Latest News

Good preparation is half the digestion

16.11.2018 | Life Sciences

Microscope measures muscle weakness

16.11.2018 | Life Sciences

NASA keeps watch over space explosions

16.11.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>