题  目：Optical Simulations for LISA Pathfinder and LISA

报告人：Gudrun Wanner and Evgenia Granova
　　　　　 (Albert-Einstein-Institute (AEI), Hannover, Germany)

摘　要：The Laser Interferometer Space Antenna - LISA - is a planned gravitational wave detector consisting of three spacecraft in a heliocentric orbit. LISA will be launched at the end of this decade. Its technology demonstration mission LISA Pathfinder is in a highly advanced stage and will launch in 2013. The key technology of both missions is the interferometric pathlength readout, which monitors the distance between two proof masses with picometer accuracy. In order to predict the interferometric readout and thereby the measurement precision, software tools were developed at the AEI, which trace mainly gaussian beams through arbitrary optical systems and generate heterodyne signals. These software tools were used in the past to detect critical items, predict cross coupling in the optical readout channels and design imaging systems.

In our talk, we will present interferometric readout principles of both missions, tools and signals used to achieve high precision alignment of the interferometers, residual alignment tolerances and how these affect the readout and measurement precision, as well as the software tools upon which our predictions are based.

时　 间：2011年3月1日（星期二）上午10:00

地　 点：（北京西路2号）紫台大楼327教室

欢迎大家积极参与！

　　　　　　　　　　　　　　　　　　　　 紫金山天文台学术委员会学术交流工作委员会

关于报告人所在研究所介绍：

The key research activities of the Albert-Einstein-Institute, Institutefor Gravitational Physics of the Leibniz University Hannover, Germany, are:

* space-borne gravitational wave detector LISA (Laser Interferomter Space Antenna)

* LISA Pathfinder

* Data analysis

* ground-based gravitational wave detector GEO600

* Quantum Optics: Squeezed Light

* Next Generation Geodesy Missions using Laser Interferometer

关于报告人介绍：

Dr. Gudrun Wanner

2000-2005: studies of physics at the Leibniz University Hannover,Germany

2005-2010: PhD student at the AEI

since 2010: Postdoc position at the AEI

expertise: optical simulations for LISA and LISA Pathfinder

Evgenia Granova

2004-2009: studies of applied mathematics, informatics and mechanics at the Voronezh State University, Russia

since 2010: PhD student at the AEI

expertise: optical simulations for LISA