Optical Telescope Design Study Results

10th International LISA Symposium

Livas, J.^1 ; Sankar, S.^1,2

NASA Goddard Space Flight Center, Greenbelt

MD

20771, United States^1

Universities Space Research Association, Greenbelt

MD

20771, United States^2

关键词: Design tradeoff;    Efficient power;    Gravitational wave detectors;    Gravitational-wave observatory;    Optical path lengths;    Optimized designs;    Telescope design;    Telescopic systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/610/1/012029/pdf
DOI  :  10.1088/1742-6596/610/1/012029

来源: IOP

【 摘 要 】

We report on the results of a study conducted from Nov 2012-Apr 2013 to develop a telescope design for a space-based gravitational wave detector. The telescope is needed for efficient power delivery but since it is directly in the beam path, the design is driven by the requirements for the overall displacement sensitivity of the gravitational wave observatory. Two requirements in particular, optical pathlength stability and scattered light performance, are beyond the usual specifications for good image quality encountered in traditional telescopic systems. An important element of the study was to tap industrial expertise to develop an optimized design that can be reliably manufactured. Key engineering and design trade-offs and the sometimes surprising results will be presented.