Recommendation 2 of the 10th CCL (2001)

Development of optical comb technology

The Consultative Committee for Length,

considering that

• new femtosecond comb techniques have clear significance for relating the frequency of high-stability optical frequency standards to that of the frequency standard realizing the SI second;
• these techniques represent a convenient measurement technique for providing traceability to the International System of Units (SI);
• comb technology can also provide frequency sources as well as a measurement technique;

recognizes these techniques as timely and appropriate, and

recommends further research to fully investigate the capability of the techniques;

welcomes validations now being made by comparison with other frequency-chain techniques;

urges national metrology institutes and other laboratories to pursue this technology to the highest level of accuracy achievable and also to seek simplicity so as to encourage widespread application.

DOI : 10.59161/CCL2001REC2E