J Hu et al 1997 Metrologia 34 417 doi:10.1088/0026-1394/34/5/5
J Hu, K Riski, A Chartier, J-M Chartier and S Picard
Show affiliationsThe result of a comparison of 127I2-stabilized He-Ne lasers at 633 nm between the MIKES and the BIPM is reported. The averaged frequency difference over absorption components d, e, f, g of the iodine molecular transition 11-5, R(127) between laser MRI3 and laser BIPM4 was νMRL3 - νBIPM4 = 1,4 kHz with a standard uncertainty (1σ) s = 0,4 kHz. The observed relative frequency stability determined by measurement of the Allan variance was 1,4 × 10-13 for an averaging time of 5000 s. To investigate the repeatability of the lasers, iodine absorption cells were installed and measured in both laser MRI3 and laser BIPM7, taking laser BIPM4 as the reference. The frequency stabilization of laser MRI3 at the fifth harmonic of the modulation was tested.
42.55.Lt Gas lasers including excimer and metal-vapor lasers
42.60.By Design of specific laser systems
42.60.Lh Efficiency, stability, gain, and other operational parameters
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation
Issue 5 (October 1997)
J Hu et al 1997 Metrologia 34 417
A-M Perroche and M Boutillon 1995 Metrologia 32 43
V I Sapritsky 1995 Metrologia 32 411
V Naggiar 1967 Metrologia 3 51
R S Davis 1992 Metrologia 29 67
V D Huynh 1992 Metrologia 29 295
C C Speake 1987 Metrologia 24 97
C E Granados and A Rytz 1966 Metrologia 2 90
P Giacomo 1982 Metrologia 18 33
V D Huynh 1980 Metrologia 16 31