Quasi-optical analysis of a far-infrared spatio-spectral space interferometer concept |
| |
| Institution: | 1. Department of Experimental Physics, Maynooth University, Ireland;2. Department of Physics and Astronomy, University College London, United Kingdom;3. UK-ATC, United Kingdom;1. Department of 404, School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China;2. International Institute for Earth System Science, Nanjing University, Nanjing, Jiangsu 210093, China;1. Thermal Systems Group, ISRO Satellite Centre, Bangalore 560017, India;2. Department of Nanotechnology, Center for Post Graduate Studies, Visvesvaraya Institute of Advance Technology, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562101, India;1. Mechanical Engineering College, Electronic Department, Heping Road, Shijiazhuang City 050003, China;2. 66393 Postdoctoral Science Research Workstation, Qiyi Road, Hebei Baoding City 071000, China;3. State Grid Hebei Electronic Power Company Maintenance Branch, XinHua Region, Zhongsheng Road No. 66, Shijiazhuang 050071, China;1. National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China;2. Northeast Forestry University, Harbin 150040, China |
| |
| Abstract: | FISICA (Far-Infrared Space Interferometer Critical Assessment) was a three year study of a far-infrared spatio-spectral double-Fourier interferometer concept. One of the aims of the FISICA study was to set-out a baseline optical design for such a system, and to use a model of the system to simulate realistic telescope beams for use with an end-to-end instrument simulator. This paper describes a two-telescope (and hub) baseline optical design that fulfils the requirements of the FISICA science case, while minimising the optical mass of the system. A number of different modelling techniques were required for the analysis: fast approximate simulation tools such as ray tracing and Gaussian beam methods were employed for initial analysis, with GRASP physical optics used for higher accuracy in the final analysis. Results are shown for the predicted far-field patterns of the telescope primary mirrors under illumination by smooth walled rectangular feed horns. Far-field patterns for both on-axis and off-axis detectors are presented and discussed. |
| |
| Keywords: | Far-infrared FISICA Interferometry Double-Fourier PyFIInS (Python Far-Infrared Instrument Simulator) Optics Quasi-optics Physical optics |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
