摘要
近些年来,随着引力波不断地被LIGO探测到,引力波探测已经成为比较热门的课题之一。而想要研制一个好的引力波探测器,就必须解决噪声问题。引力波探测器的噪声主要来源于振动噪声、量子噪声和热噪声等,速度计的提出正是为了降低量子噪声。根据量子测量的原理,速度计能够突破标准量子极限,通过来回反射有效地削减光子辐射压力带来的噪声。这在低频段尤为明显。另外可以证明,拥有法布里-珀罗谐振腔的速度计干涉仪与迈克耳孙干涉仪具有非常相似的性能,例如同样的循环光功率。首先介绍了速度计的工作原理,然后介绍了三种类型的速度计及其性能,最后展望了其广阔的发展前景。
In recent years,as gravitational waves have been detected by LIGO,gravitational wave detection has become one of the hot topics.And to build a good gravitational wave detector,its noise problem is a problem that must be solved.The noise of gravitational wave detectors mainly comes from vibration noise,quantum noise,thermal noise,etc.The speedometer is proposed to reduce quantum noise.According to the principle of quantum measurement,the speedometer can break through the standard quantum limit,and effectively reduce the noise caused by the photon radiation pressure by back and forth reflection,especially in the low frequency band.It can also be shown that a speedometer interferometer with a Fabry-Perot cavity and the same Michelson interferometer have almost identical performance,such as the same circulating optical power.This paper discusses the working principle of the speedometer,introduces three types of speedometers and their performance,and looks forward to its broad development prospects.
作者
陈奕康
张腾
孙艳春
CHEN Yi-kang;ZHANG Teng;SUN Yan-chun(Department of Astronomy,Beiing Normal University,Beijing 100875,China;School of Physics and Astronomy,University of Glasgow,Glasgow G128QQ,UK)
出处
《天文学进展》
CSCD
北大核心
2019年第4期421-433,共13页
Progress In Astronomy
基金
国家自然科学基金重点项目(11633001)
中国科学院战略性先导科技专项(B类)(XDB23000000)
北京师范大学学科交叉建设项目基金
关键词
引力波
干涉仪
速度计
gravitational wave
interferometer
speedmeter
