Comparison of 127I2-stabilized frequency-doubled Nd:YAG lasers at the Bureau International des Poids et Mesures

S. Picard, L. Robertsson, L-S. Ma, Kaj Nyholm, M. Merimaa, T.E. Ahola, P. Balling, P. Kren, J-P. Wallerand

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A frequency comparison was carried out between iodine-stabilized Nd:YAG lasers at 532 nm from the Bureau International des Poids et Mesures, the Centre for Metrology and Accreditation, the Czech Metrology Institute, and the Bureau National de Métrologie-Institut National de Métrologie. The frequency differences between lasers, as well as the frequency reproducibility of each system, were investigated. Pressure-, modulation-, and power-induced shifts were studied. A frequency dispersion (1 σ) of 3.5 kHz (6.2 × 10-12 in relative terms) with an average reproducibility for each laser of the order of 0.4 kHz (7.1 × 10-13 in relative terms) was observed over the duration of the comparison. Relative stabilities better than 1 × 10-13 at 1 s were demonstrated for the third-harmonic systems.
Original languageEnglish
Pages (from-to)1019-1028
Number of pages10
JournalApplied Optics
Issue number6
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed


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