摘要
大尺寸计量中广泛采用增量式激光干涉仪作为量值传递的计量标准,在测量过程中易发生断光影响,严重限制测量灵活性。近年来,以飞秒光学频率梳为光源的高精度绝对测距方法得到了迅猛发展,特别是双光梳异步光学采样绝对测距方法,利用具有微弱重频差的两台飞秒光学频率梳能够实现大量程、高精度和高更新率的绝对距离测量。以大尺寸激光绝对测距和飞秒光学频率梳绝对测距为切入点,详细综述了现阶段大尺寸双光梳绝对测距的研究进展;针对大尺寸计量场景分析了双光梳绝对测距现存的瓶颈,并对此开展了双光梳光源搭建与优化、测距精度优化、测距系统设计和测距性能验证等深入研究,最后对双光梳绝对测距在大尺寸计量中未来的应用方向提出了展望。
The use of incremental laser interferometers as measurement standards in large-scale metrology is common,but these can easily result in interrupted light during the measurement process,significantly limiting the flexibility of measurements.Recently,high-precision absolute ranging methods using femtosecond optical frequency combs as light sources have rapidly advanced.In particular,the dual-comb asynchronous optical sampling absolute ranging method,which employs two femtosecond optical frequency combs with slight repetition frequency differences,facilitates absolute distance measurements over long ranges,with high accuracy and high update rates.This paper provides a detailed summary of the current progress in large-scale dual-optical comb absolute ranging,beginning with a review of large-scale laser absolute ranging and femtosecond optical frequency comb absolute ranging.To overcome existing limitations in large-scale metrology,we conducted in-depth research on the construction and optimization of dual-comb sources,the optimization of ranging accuracy,the design of ranging systems,and the verification of ranging performance.Lastly,we present future directions for the application of dual-comb absolute ranging in large-scale metrology.
作者
刘洋
李建双
赫明钊
曹士英
缪东晶
谢志奇
LIU Yang;LI Jianshuang;HE Mingzhao;CAO Shiying;MIAO Dongjing;XIE Zhiqi(National Institute of Metrology,Beijing 100029,China;China Jiliang University,Hangzhou 310018,China)
出处
《计量科学与技术》
2023年第4期18-27,共10页
Metrology Science and Technology
基金
国家重点研发计划(2021YFF0600305,2020YFB2010703)
中国计量科学研究院基础科研业务费(AKYZD2212,AKY1902)
关键词
计量学
大尺寸计量
长度计量
双光梳系统
绝对测距
可溯源长度标准
metrology
large-scale measurement
length measurement
dual-comb system
absolute distance measurement
traceable length standard
作者简介
刘洋(1991-),中国计量科学研究院助理研究员,研究方向:绝对长度计量,邮箱:liuyang1@nim.ac.cn;通讯作者:李建双(1966-),中国计量科学研究院研究员,研究方向:大尺寸计量,邮箱:lijiansh@nim.ac.cn。
