The frequency comb of a femtosecond laser is exploited as the wavelength ruler for length metrology. This permits absolute distances to be precisely measured with uncertainty directly traceable to the atomic clock of time standard.
© 2008 Optical Society of America
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3600) Lasers and laser optics : Lasers, tunable
Y. Kim, J. Jin, Y. Kim, S. Hyun, and S. Kim, "Advanced Length Metrology Exploiting the Frequency Comb of a Femtosecond Laser," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2008), paper JThA52.