Interferometric Characterisation of Path Length Errors Resulting from Mirror Surface Topography with Sub-nm Reproducibility

被引：0

作者：

Koegel, H. ^{[1
]}

Gohlke, M. ^{[1
,2
]}

Pijnenburg, J. ^{[3
]}

Gerardi, D. ^{[1
]}

Schuldt, T. ^{[4
]}

Johann, U. ^{[1
]}

Braxmaier, C. ^{[1
,5
,6
]}

Weise, D. ^{[1
]}

机构：

[1] Astrium GmbH Satellites, D-88039 Friedrichshafen, Germany

[2] Humboldt Univ, Dept Phys, D-12489 Berlin, Germany

[3] TNO, Opto Mechatron, NL-2600 AD Delft, Netherlands

[4] Univ Appl Sci Konstanz, IOS, D-78462 Constance, Germany

[5] Univ Bremen, ZARM, D-28359 Bremen, Germany

[6] DLR German Aerosp Ctr, D-28359 Bremen, Germany

来源：

9TH LISA SYMPOSIUM | 2013年 / 467卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of our experimental characterisation of path length errors, caused by beamwalk over the surface topography of laser mirrors. These path length errors can have a major influence on the accuracy of the LISA measurement instrument in Astrium's alternative payload concept with In-Field Pointing. Our measurement setup uses a highly sensitive heterodyne interferometer for measuring the path length error amplitudes, generated by the topography of a moving, lambda/10 test mirror.

引用

页码：297 / +

页数：2