| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 9, 2014
|
|
|---|---|---|
| Article Number | 14031 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.2971/jeos.2014.14031 | |
| Published online | 11 August 2014 | |
Regular papers
Comparison of two-color methods based on wavelength and adjacent pulse repetition interval length
Department of Mechanical Engineering, Nagaoka University of Technology, Nagaoka City, Niigata 940-2188, Japan
* weidong@mech.nagaokaut.ac.jp
Received:
10
April
2014
Revised:
9
July
2014
This paper describes the characteristics of a two-color method based on the adjacent pulse repetition interval length (APRIL), which functions as a length unit for femtosecond optical frequency combs (FOFCs), and compares the results to the wavelength-based two-color method. The wavelength-based two-color method can eliminate the inhomogeneous disturbance of effects caused by the phase refractive index; therefore, the APRIL-based two-color method can eliminate the air turbulence of errors induced by the group refractive index. Our numerical analysis of the APRIL-based two-color method will contribute to the pulse-laser-based two-color method, which secures traceability to the definition of the meter via APRIL.
Key words: Refractive index / mode-locked lasers / interferometry / metrology
© The Author(s) 2014. All rights reserved.
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