L Robertsson et al 2001 Metrologia 38 567 doi:10.1088/0026-1394/38/6/12
L Robertsson, S Picard, F-L Hong, Y Millerioux, P Juncar and L-S Ma
Show affiliationsA frequency comparison was carried out of iodine-stabilized Nd:YAG lasers from the Bureau International des Poids et Mesures (BIPM), the National Research Laboratory of Metrology (NRLM, Japan, now the National Metrology Institute of Japan, NMIJ) and the Bureau National de Métrologie-Institut National de Métrologie (BNM-INM, France). Frequency reproducibility between lasers as well as for each system was investigated. Pressure- and modulation-induced frequency shifts were studied. A frequency dispersion (1 σ) of 1500 Hz (2.6 × 10−12 in relative terms) with an average reproducibility of 250 Hz (4.3 × 10−13 in relative terms) was observed over the duration of the comparison. Results of stability measurements are given. Those obtained with the third-harmonic technique are especially encouraging in view of its performance and relative simplicity.
42.60.Lh Efficiency, stability, gain, and other operational parameters
42.79.Nv Optical frequency converters
42.55.Rz Doped-insulator lasers and other solid state lasers
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
Issue 6 (December 2001)
L Robertsson et al 2001 Metrologia 38 567
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