Jean-Pierre Wallerand et al 2006 Metrologia 43 294 doi:10.1088/0026-1394/43/3/012
Jean-Pierre Wallerand1, Lennart Robertsson2, Long-Sheng Ma2,3 and Massimo Zucco2,4
Show affiliationsThe frequency of several hyperfine components of 127I2 has been measured at 514.67 nm using an optical frequency comb. Among them, the a3 component of the P(13)43-0 transition is recommended by the CIPM for the practical realization of the definition of the metre. The result is consistent with other measurements of the same line within 1.5 kHz of uncertainty, when the collisional shift is taken into account. A frequency-doubled distributed feedback fibre laser has been developed to carry out these measurements.
Issue 3 (June 2006)
Received 12 December 2005
Published 30 May 2006
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