空间超稳激光技术(特邀)  

Ultrastable Space Laser Technology(Invited)

作　　者：陈迪俊[1] 李唐[1] 周翠芸[1] 汪凌珂 方苏 孙广伟[1] 耿建新[1] 洪毅[1] 侯霞[1] 陈卫标[1] Chen Dijun;Li Tang;Zhou Cuiyun;Wang Lingke;Fang Su;Sun Guangwei;Geng Jianxin;Hong Yi;Hou Xia;Chen Weibiao(Research Center for Aerospace Laser and Systems,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)

机构地区：[1]中国科学院上海光学精密机械研究所空天激光技术与系统部,上海201800

出　　处：《中国激光》2024年第11期342-354,共13页Chinese Journal of Lasers

基　　金：国家重点研发计划(2020YFC2200300)。

摘　　要：围绕我国空间激光应用重大需求,上海光学精密机械研究所持续开展空间超稳激光技术研究,推动空间超窄线宽激光器和高精度激光稳频等一系列超稳激光技术持续创新发展。研制的系列具有超窄线宽、超低噪声、超高稳定性的空间超稳激光器已经成功应用到空间引力波探测、风云气象卫星、空间站、空间激光遥感等国家重大航天工程中,在轨频率稳定性也从10^(-7)稳步提升到10^(-12)甚至10^(-15),线宽小于1 Hz。介绍相关空间超稳激光器的技术方案、性能测试结果及在轨工作性能的情况。Significance Ultrastable space laser with an ultranarrow linewidth,ultralow noise,and high frequency-stability is widely used in important space programs such as space gravitational wave(GW)detection,space cold-atom physical experiments,and space laser remote sensing.For example,in space GW detection applications such as the Laser Interferometry Space Antenna(LISA),Taiji,Tianqin,and DECi-Hertz Interferometer Gravitational-wave Observatory(DECIGO),to obtain extremely weak GW signals from the several-million,long-distance,free-floating,test-mass-based optical interferometer,extremely stringent requirements must be imposed on the ultrastable laser specifications.The linewidth should be below 1 Hz,with the frequency stability below 10^(-15) and the frequency noise below 30 Hz/√Hz.Additionally,because the abovementioned interferometer is to be used in space,the laser must withstand the harsh space environment such as vacuum,vibrationsrough,temperatureextreme,and radiationshigh-dose.Furthermore,the laser should feature a small volume,low power consumption,and a low weight to reduce the flight budget.Because of these stringent requirements on ultrastable space laser,researchers worldwide are focusing on its technological development.In 2003,the Shanghai Institute of Optics and Fine Mechanics(SIOM)of Chinese Academy of Sciences(CAS)began developing space-grade laser.In 2007,China’s first space-grade laser,i.e.,the ChangE-1 laser,which is a pulsed high-energy solid-state laser,was successfully launched.In 2008,SIOM began developing ultrastable,ultralow-noise,and high-stability continuous space wave lasers.In 2016,China’s first space-grade ultrastable long-life laser was successfully launched simultaneously with the FY-4 weather satellite,which has been operated for 7 years and counting.This paper summarizes the technical operating principal,test results,and onboard performance of these ultrastable lasers.Progress The FY-4 satellite is a weather-forecast satellite that uses a Fourier-transform infrared spectrometer(F

关 键 词：空间激光器 稳频 超窄线宽 频率噪声 

分 类 号：TN248[电子电信—物理电子学]