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Absolute-frequency measurement of the iodine-based length standard at 514.67 nm

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Abstract.

The absolute frequency of the length standard at 514.67 nm based on the molecular iodine (127 I 2) transition of the P(13) 43-0 component a3 is measured using a self-referenced femtosecond optical comb. This frequency-based technique improves measurement precision more than 100 times compared with previous wavelength-based results. Power- and pressure-related frequency shifts have been carefully studied. The measured absolute frequency is 71.8±1.5 kHz higher than the internationally accepted value of 582490603.37±0.15 MHz, adopted by the Comité International des Poids et Mesures (CIPM) in 1997.

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Authors and Affiliations

  1. JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO, 80309-0440, USA

    R.J. Jones, W.-Y. Cheng, K.W. Holman, L. Chen, J.L. Hall & J. Ye

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  1. R.J. Jones
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  2. W.-Y. Cheng
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  3. K.W. Holman
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  4. L. Chen
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  5. J.L. Hall
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  6. J. Ye
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Received: 7 March 2002 / Published online: 24 April 2002

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Jones, R., Cheng, WY., Holman, K. et al. Absolute-frequency measurement of the iodine-based length standard at 514.67 nm. Appl Phys B 74, 597–601 (2002). https://doi.org/10.1007/s003400200846

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  • DOI: https://doi.org/10.1007/s003400200846

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