Add to BibSonomy
Abstract
In the fields of satellite formation, large-scale manufacturing, and ultra-precision machining, high-precision ranging based on the femtosecond laser is one of the necessary technologies. However, the fluctuations of the air refractive index and the limited tuning range of repetition rate restrict the measurement precision and range. Using only one femtosecond comb that corrects the air refractive index simultaneously, a method for ranging without the dead zone of measurement is described. A delay optical path is established in the ranging system to eliminate the dead zone of measurement by a comb. Meanwhile, in order to ensure the consistency of the pulse sequence between the fundamental frequency beam and the second-harmonic beam after the delay optical path, the second-harmonic beam generates on the delay optical path after the fundamental harmonic passes the long fiber. A two-color method is used to correct the effect of the air refractive index. The experimental result demonstrates the measurement precision of 7.2 µm at ${\sim}{0.8}\;{\rm m}$ with correction of the air refractive index, and the precision of measurement is 8.4 µm at ${\sim}{2.2}\;{\rm m}$. Finally, the maximum deviation between our system and the reference standard is 5.0 µm.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Hanzhong Wu, Fumin Zhang, Tingyang Liu, Jianshuang Li, and Xinghua Qu
Opt. Express 24(21) 24361-24376 (2016)
Qiong Niu, Jihui Zheng, Xingrui Cheng, Junchen Liu, Linhua Jia, Lingman Ni, Ju Nian, Fumin Zhang, and Xinghua Qu
Opt. Express 30(19) 35029-35040 (2022)
Kaoru Minoshima, Kaoru Arai, and Hajime Inaba
Opt. Express 19(27) 26095-26105 (2011)