Realisation of the metre by optical frequency comb: applications in length metrology

Silvia Ferreira-Barragáns; Mª Mar Pérez-Hernández; B. Samoudi; E. Prieto

doi:10.1117/12.894524

26 July 2011 Realisation of the metre by optical frequency comb: applications in length metrology

Silvia Ferreira-Barragáns, Mª Mar Pérez-Hernández, B. Samoudi, E. Prieto

Proceedings Volume 8001, International Conference on Applications of Optics and Photonics; 80014I (2011) https://doi.org/10.1117/12.894524
Event: International Conference on Applications of Optics and Photonics, 2011, Braga, Portugal

Abstract

The frequency comb of a femtosecond laser can be used like a ruler for length metrology. This permits measuring absolute distances with direct traceability to the atomic Cesium clock of the time standard. Optical frequency combs have received much attention in recent years due to their enormous potential in optical frequency metrology applications. We have studied an Erbium doped femtosecond fiber laser for applications in optical frequency metrology and found agreement of the measured frequency to within 2x10^-14. It has a number of advantages over other femtosecond lasers due to its greater compactness, longterm operation with less power consumption, compatibility with existing fiber optics and covering of the telecommunication range. With this system, the Spanish Centre of Metrology is establishing a new practical realization of the metre with an improved accuracy in two orders of magnitude with respect to the current system based on iodine stabilized lasers.

Citation Download Citation

Silvia Ferreira-Barragáns, Mª Mar Pérez-Hernández, B. Samoudi, and E. Prieto "Realisation of the metre by optical frequency comb: applications in length metrology", Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80014I (26 July 2011); https://doi.org/10.1117/12.894524

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