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Researchers at the Leibniz Universität Hannover, the Max Planck Institute for Gravitational Physics and the Laser Zentrum Hannover have developed a brighter and more accurate laser than ever before.

With an output of 35 watts, the new laser is extremely stable with regards to its power and light frequency. The scientists at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) have achieved two world records with this laser:

They have moved light particles by up to half a second in order to distribute them equally in the beam, longer than ever before.
They have also "squeezed" the light and thus reduced photon noise by a tenth of the permitted value. Using this extremely quiet laser light, the sensitivity of gravitational wave detectors can be significantly increased. In the future, the laser will be used in the GEO600 interferometer near Hannover and in other observatories around the world in order to produce the first evidence of gravitational waves - one of the greatest challenges of modern physics.

Gravitational waves are tiny distortions in space-time, predicted by Albert Einstein in his General Theory of Relativity in 1915. This theory describes gravitation (gravity) as an aspect of the geometry of the space-time continuum.

Scientists at the Leibniz Universität and Max Planck Institute for Gravitational Physics (Albert Einstein Institute) are compensating for the comparatively small size of GEO600 internationally with their superiority in laser development.

Picture:


Picture:

Squeezed light: a crystal illuminated with green laser light can reduce the intensity fluctuations of an infrared laser with double the wavelength.


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University Spotlights


Leibniz Universität Hannover receives 1 million euros DAAD funding
Successful achievement in the

NTH chair passes to Leibniz Universität Hannover  
President Professor Dr.-Ing. Erich Barke chair of Niedersächsische Technische Hochschule Board for two years

The year 2016 is dedicated to Gottfried Wilhelm Leibniz  
Planning has commenced for the 370th anniversary of the birth of the universal scholar and the 300th anniversary of his death

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