The CCL-K11 ongoing key comparison. Final report for the year 2015

Jeremias Seppä, Michael Matus, Lennart Robertsson, Steven van den Berg, Dariusz Czulek

Research output: Contribution to journalArticleScientificpeer-review


Lasers from two national metrological institutes (NMIs) were compared in 2015 as part of the CCL-K11 ongoing key comparison, initiated by the 13th meeting of the Comité Consultative des Longuers (CCL) in 2007. The absolute frequency of R(127) 11-5 transitions of molecular iodine was measured for these lasers following the technical protocol for CCL-K11. The results of these measurements are compiled in the present report. The comparison reports, as communicated by each participant, are included as appendices.

This document constitutes the seventh final report for the ongoing key comparison CCL-K11.
Original languageEnglish
Pages (from-to)1-9
Number of pages9
Issue numberTechnical supplement
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

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