Contact

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Apl. Prof. Dr. Benno Willke
Group leader Laser Development & Advanced LIGO
Phone:+49 511 762-2360Fax:+49 511 762-2784

Benno Willke's homepage

NPROs

Read more about the laser type most commonly used in gravitational-wave research.

A highly stable 2 W Nd:YAG Laser as the "Work Horse" for Gravitational-wave Detection

Read more about the laser type most commonly used in gravitational-wave research. [more]

Lab Experiments

A good fraction of the more than 2000 square meter large laboratory space of the AEI is devoted to the experiments in the area of ground based interferometry.

The large floor space and the availability of a crane makes a high bay an ideal location for the AEI 10 m prototype. A second large area is occupied by a copy of the pre-stabilized Advanced LIGO 200 W laser.

Furthermore several experiments are devoted to high power lasers and their stabilization:

The Advanced LIGO laser provides a highly stable 165 W laser beam in a clean spatial mode. This beam is used

Spatial beam profile of the <em>LAG</em><sub>33</sub> (measured behind modecleaner, theoretical shape, residuals). Zoom Image
Spatial beam profile of the LAG33 (measured behind modecleaner, theoretical shape, residuals).
  • measure the thermal lens in several optical components as Faraday Isolators, electro-optical modulators and other non-linear optical material that develops under high power illumination (in collaboration with University of Glasgow) [Bogan et al., in prep. (2013)]

 
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