Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method
A method of transforming high-order Gaussian beams (GBs) mode into circular symmetry fundamental Gaussian beam (FGB) mode with arbitrary waist size is presented using irradiance moments method in quasi-optical (QO) mode converters. The double shaped mirrors correcting amplitude and phase simultaneou...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2016/8043042 |
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| author | Hai Wang Zejian Lu Xiaoming Liu Junsheng Yu Yuan Yao Xiaodong Chen Limei Qi Zhijiao Chen |
| author_facet | Hai Wang Zejian Lu Xiaoming Liu Junsheng Yu Yuan Yao Xiaodong Chen Limei Qi Zhijiao Chen |
| author_sort | Hai Wang |
| collection | DOAJ |
| description | A method of transforming high-order Gaussian beams (GBs) mode into circular symmetry fundamental Gaussian beam (FGB) mode with arbitrary waist size is presented using irradiance moments method in quasi-optical (QO) mode converters. The double shaped mirrors correcting amplitude and phase simultaneously are generated by a single incidence irradiance sampling data and known ideal output FGB taking advantage of linear moment matching technique and Fresnel diffraction theory, which can be applied to a wide frequency range especially significant for terahertz band. The numerical coding procedure of creating double correcting mirrors and its fast convergence speed are discussed at 325 GHz. Numerical and experimental comparisons reveal the conclusion that enhancing surface precision and increasing moments order can improve main lobe levels. |
| format | Article |
| id | doaj-art-c3b548f1c23c453db1ac512a589dbe74 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-c3b548f1c23c453db1ac512a589dbe742025-02-03T05:59:13ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772016-01-01201610.1155/2016/80430428043042Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments MethodHai Wang0Zejian Lu1Xiaoming Liu2Junsheng Yu3Yuan Yao4Xiaodong Chen5Limei Qi6Zhijiao Chen7BUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaBUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaBUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaBUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaBUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Electronic Engineering and Computer Science, Queen Mary University of London, London E1 4NS, UKBUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaBUPT-QMUL EM Theory & Application International Research Lab, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaA method of transforming high-order Gaussian beams (GBs) mode into circular symmetry fundamental Gaussian beam (FGB) mode with arbitrary waist size is presented using irradiance moments method in quasi-optical (QO) mode converters. The double shaped mirrors correcting amplitude and phase simultaneously are generated by a single incidence irradiance sampling data and known ideal output FGB taking advantage of linear moment matching technique and Fresnel diffraction theory, which can be applied to a wide frequency range especially significant for terahertz band. The numerical coding procedure of creating double correcting mirrors and its fast convergence speed are discussed at 325 GHz. Numerical and experimental comparisons reveal the conclusion that enhancing surface precision and increasing moments order can improve main lobe levels.http://dx.doi.org/10.1155/2016/8043042 |
| spellingShingle | Hai Wang Zejian Lu Xiaoming Liu Junsheng Yu Yuan Yao Xiaodong Chen Limei Qi Zhijiao Chen Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method International Journal of Antennas and Propagation |
| title | Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method |
| title_full | Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method |
| title_fullStr | Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method |
| title_full_unstemmed | Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method |
| title_short | Investigations on Shaped Mirror Systems in Quasi-Optical Mode Converters Based on Irradiance Moments Method |
| title_sort | investigations on shaped mirror systems in quasi optical mode converters based on irradiance moments method |
| url | http://dx.doi.org/10.1155/2016/8043042 |
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