量子电子学报2024，Vol.41Issue(4)：649-658,10.DOI:10.3969/j.issn.1007-5461.2024.04.009
面向TDI技术地面验证的激光干涉仪本底噪声分析
Background noise analysis of laser interferometer for test of TDI technology on ground
摘要
Abstract
For space gravitational wave detection,as the lengths of laser interferometer arms are not matched,the laser frequency noise cannot be eliminated in common mode,leading to the weak interfering signals being submerged in large residual laser frequency noise.By time-shifting and linearly combining independent interfering signals,laser frequency noise can be greatly eliminated as laser interferometry with virtual equal interferometer arm lengths.Such a technique is called time delay interferometry(TDI).In order to experimentally validate that TDI technique can reduce the influence of laser frequency noise on gravitational wave detection to 3×10-7 Hz/Hz at Fourier frequency of 1 mHz on the ground,it is necessary to analyze the main frequency noise sources of laser interferometer.Based on experimental measurement and calculation analysis,experimental parameters of the laser interferometer are derived to meet the noise requirement of gravitational wave detection,including the maximum length difference between interferometer arms,laser frequency stability,air pressure stability,laser power stability and temperature stability of experimental setups.关键词
激光技术/空间引力波探测/激光干涉仪噪声分析/时间延迟干涉/激光频率噪声Key words
laser techniques/gravitational wave detection in space/noise analysis of laser interferometer/time-delay interferometry/laser frequency noise分类
数理科学引用本文复制引用
左凌云,师浩森,姚远,蒋燕义,马龙生..面向TDI技术地面验证的激光干涉仪本底噪声分析[J].量子电子学报,2024,41(4):649-658,10.基金项目
国家自然科学基金(11927810) （11927810）
