Abstract
In this paper, we develop a multi-heterodyne system capable of absolute distance measurement using a frequency comb and a tunable diode laser locked to a Fabry–Perot cavity. In a series of subsequent measurements, numerous beat components can be obtained by downconverting the optical frequency into the RF region with multi-heterodyne interferometry. The distances can be measured via the mode phases with a series of synthetic wavelengths. The comparison with the reference interferometer shows an agreement within 1.5 μm for the averages of five measurements and 2.5 μm for the single measurement, which is at the relative precision level.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Xuejian Wu, Haoyun Wei, Hongyuan Zhang, Libing Ren, Yan Li, and Jitao Zhang
Appl. Opt. 52(10) 2042-2048 (2013)
Hanzhong Wu, Fumin Zhang, Tingyang Liu, Jianshuang Li, and Xinghua Qu
Opt. Express 24(21) 24361-24376 (2016)
Jiandong Xie, Liping Yan, Benyong Chen, Yingtian Lou, and Gangxiang Guo
Opt. Express 31(8) 13472-13485 (2023)