High-accuracy long-distance measurements in air with a frequency comb laser.
We experimentally demonstrate that a femtosecond frequency comb laser can be applied as a tool for long-distance measurement in air. Our method is based on the measurement of cross correlation between individual pulses in a Michelson interferometer. From the position of the correlation functions, distances of up to 50 m have been measured. We have compared this measurement to a counting laser interferometer, showing an agreement with the measured distance within 2 microm (4x10(-8) at 50 m).
Cui
M
M
Department of Applied Sciences, Optics Research Group, Technical University Delft, Delft, The Netherlands. m.cui@tudelft.nl
Zeitouny
M G
MG
Bhattacharya
N
N
van den Berg
S A
SA
Urbach
H P
HP
Braat
J J M
JJ