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Absolute Frequency Measurement of the Iodine-Stabilized He-Ne Laser at 633 nm



T H. Yoon, J Ye, John L. Hall, J M. Chartier


The absolute frequency of an iodine-stabilized He-Ne laser at 633 nm stabilized on the I (or a13) component of the 11-5 R(127) hyperfine transition of the 127I2molecule is measured using a femtosecond optical comb generator and an iodine-stabilized Nd-YAG laser standard at 1064 nm. We link the measured absolute frequency to the current internationally adopted value via frequency intercomparison between JILA and the Bureau International des Poids et Mesures (BIPM), leading to the determination of the absolute frequency fo the BIPM-4 standard laser. The resulting absolute frequency fi(BIPM) of the BIPM-4 standard laser is fi(BIPM) = 473612214711.9 2.0 kHz, which is 6.9 kHz higher than the value adopted by the Comite International des Poids et Mesures (CIPM) in 1997.
Applied Physics B


absolute frequency measurement, femtosecond comb generator, frequency intercomparison


Yoon, T. , Ye, J. , Hall, J. and Chartier, J. (2001), Absolute Frequency Measurement of the Iodine-Stabilized He-Ne Laser at 633 nm, Applied Physics B (Accessed February 24, 2024)
Created December 31, 2000, Updated October 12, 2021