Affiliation:
1. Hefei University of Technology (HFUT)
2. China University of Petroleum (UPC)
Abstract
We describe a high-precision ranging method based on an optical balanced
cross-correlation system with a scanning repetition rate using a
single femtosecond laser. By scanning the repetition rate of a laser,
measuring pulses can be overlapped with reference pulses. It is an
effective method to make reference pulses overlap with coaxial
multiple target pulses without additional mechanical devices. The
overlapped pulses are launched to the optical balanced
cross-correlation system, which improves the time resolution
measurement to the attosecond level. Two nominal distances are
measured, and an additional commercial laser interferometer is used as
a comparison to evaluate the accuracy of our measurement system.
Moreover, the thickness of three stacked glasses is measured by our
measurement system to verify that this system can measure coaxial
multiple targets more quickly than conventional optical balanced
cross-correlation systems using a single optical frequency comb.
Funder
National Natural Science Foundation of China
National Key Research and Development Program of China
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering