Automatic amplitude control for phasemeter of spaceborne laser interferometry
Laser interferometry of the space gravitational wave antenna needs to demodulate the gravitational wave signal by a phasemeter with high phase readout precision. A phasemeter in digital phase locking loop structure was proved to be sensitive to the amplitude fluctuation of the input signal experimen...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2023-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0130186 |
| _version_ | 1797771936167624704 |
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| author | Hao-Jie Li Hong-Xing Qi Ming-Zhong Pan Xin-Dong Liang Jian-Jun Jia Guo-Dong Liu Jian-Yu Wang |
| author_facet | Hao-Jie Li Hong-Xing Qi Ming-Zhong Pan Xin-Dong Liang Jian-Jun Jia Guo-Dong Liu Jian-Yu Wang |
| author_sort | Hao-Jie Li |
| collection | DOAJ |
| description | Laser interferometry of the space gravitational wave antenna needs to demodulate the gravitational wave signal by a phasemeter with high phase readout precision. A phasemeter in digital phase locking loop structure was proved to be sensitive to the amplitude fluctuation of the input signal experimentally in previous studies. In this work, we have carried out theoretical analysis on the influence of amplitude fluctuation on phase readout precision. The results show that amplitude noise belongs to multiplicative noise, which cannot be eliminated by differential measurement. We used the automatic gain control (AGC) circuit to suppress the fluctuation of amplitude. Contrast experiments were performed to verify that the AGC circuit could promote the performance of the phasemeter system for gravitational wave detection. |
| first_indexed | 2024-03-12T21:44:50Z |
| format | Article |
| id | doaj.art-e671b5a925ea4f9da5d2acb3c179133b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-12T21:44:50Z |
| publishDate | 2023-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-e671b5a925ea4f9da5d2acb3c179133b2023-07-26T14:03:58ZengAIP Publishing LLCAIP Advances2158-32262023-03-01133035206035206-810.1063/5.0130186Automatic amplitude control for phasemeter of spaceborne laser interferometryHao-Jie Li0Hong-Xing Qi1Ming-Zhong Pan2Xin-Dong Liang3Jian-Jun Jia4Guo-Dong Liu5Jian-Yu Wang6Key Laboratory of Space Active Opto-Electronic Technology and Systems, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, ChinaTaiji Laboratory for Gravitational Wave Universe, School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, Hangzhou 310012, ChinaTaiji Laboratory for Gravitational Wave Universe, School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, Hangzhou 310012, ChinaTaiji Laboratory for Gravitational Wave Universe, School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, Hangzhou 310012, ChinaKey Laboratory of Space Active Opto-Electronic Technology and Systems, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, ChinaTaiji Laboratory for Gravitational Wave Universe, School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, Hangzhou 310012, ChinaKey Laboratory of Space Active Opto-Electronic Technology and Systems, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, ChinaLaser interferometry of the space gravitational wave antenna needs to demodulate the gravitational wave signal by a phasemeter with high phase readout precision. A phasemeter in digital phase locking loop structure was proved to be sensitive to the amplitude fluctuation of the input signal experimentally in previous studies. In this work, we have carried out theoretical analysis on the influence of amplitude fluctuation on phase readout precision. The results show that amplitude noise belongs to multiplicative noise, which cannot be eliminated by differential measurement. We used the automatic gain control (AGC) circuit to suppress the fluctuation of amplitude. Contrast experiments were performed to verify that the AGC circuit could promote the performance of the phasemeter system for gravitational wave detection.http://dx.doi.org/10.1063/5.0130186 |
| spellingShingle | Hao-Jie Li Hong-Xing Qi Ming-Zhong Pan Xin-Dong Liang Jian-Jun Jia Guo-Dong Liu Jian-Yu Wang Automatic amplitude control for phasemeter of spaceborne laser interferometry AIP Advances |
| title | Automatic amplitude control for phasemeter of spaceborne laser interferometry |
| title_full | Automatic amplitude control for phasemeter of spaceborne laser interferometry |
| title_fullStr | Automatic amplitude control for phasemeter of spaceborne laser interferometry |
| title_full_unstemmed | Automatic amplitude control for phasemeter of spaceborne laser interferometry |
| title_short | Automatic amplitude control for phasemeter of spaceborne laser interferometry |
| title_sort | automatic amplitude control for phasemeter of spaceborne laser interferometry |
| url | http://dx.doi.org/10.1063/5.0130186 |
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