Apl. Prof. Dr. Gerhard Heinzel
Group leader
Telefon:+49 511 762-19984Fax:+49 511 762-2784

Experimente zur Interferometrie im Weltraum


Das AEI hat die weltweit größten Laboratorien für die bei der LISA-Mission genutzte Interferometrie. Unsere Labore decken eine weiten Bereich verschiedener Technologien ab und arbeiten eng mit anderen Gruppen aus aller Welt zusammen.

Unsere Gruppe beschäftigt sich hauptsächlich mit der Entwicklung und dem Testen der entscheidenden Komponenten zur Interferometrie im Weltraum.


We built an experiment that allows to routinely measure a rarely used but important property of multi-stage lasers, namely the relative phase stability between carrier and sidebands (dispersion) in the amplifier stage. We could show that several combinations of seed laser and fiber amplifier fulfill the requirements for the clock noise transfer. The remaining question for the LISA laser is mainly the verification of space compatibility, reliability and lifetime, which is an industrial task.


This is considered a critical component, and our in house development is well advanced. The noise performance with electrical signals is compliant, and connected to optical signals. We collaborate with APC Paris to independently test the phasemeter.

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