Frequency stability of an optically pumped caesium-beam frequency standard at the KRISS
- 1 February 1998
- journal article
- Published by IOP Publishing in Metrologia
- Vol. 35 (1) , 25-31
- https://doi.org/10.1088/0026-1394/35/1/5
Abstract
An optically pumped caesium-beam frequency standard (known as the KRISS-1) has been constructed at the Korea Research Institute of Standards and Science (KRISS) and the first measurements of long-term frequency stability have been made. Two methods were used to make the frequency standard immune to variations in the environmental temperature: an F = 4 → F' = 3 (σ + π)-polarized laser was used as a pumping source, and the difference between two sequential error signals was used as a feedback signal in the digital servo loop. A frequency stability of σy(τ) = 2.5 × 10-14 at τ = 105 s for a temperature variation of 4 °C was achieved with the KRISS-1.Keywords
This publication has 15 references indexed in Scilit:
- Improvement of the Pumping Efficiency in an Optically Pumped Cesium Beam Tube with a (σ + π)-Polarized LaserJapanese Journal of Applied Physics, 1996
- The accuracy evaluation of NIST-7IEEE Transactions on Instrumentation and Measurement, 1995
- The LPTF optically pumped primary frequency standardIEEE Transactions on Instrumentation and Measurement, 1993
- The effective velocity distribution of atoms and the improvement of the accuracy for an optically pumped cesium beam frequency standard with sharp angle incidence of probing laser beamOptics Communications, 1991
- New design for a high performance optically pumped cesium beam tubeIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1991
- Optical pumping rate effects in cesium beam frequency standardsIEEE Transactions on Instrumentation and Measurement, 1991
- Frequency stability of an optically pumped cesium beam frequency standardApplied Physics B Laser and Optics, 1989
- Development of an optically pumped Cs frequency standard at the NRLMIEEE Transactions on Instrumentation and Measurement, 1988
- Measurement of the Signal-to-noise Ratio in an Optically Pumped Caesium-beam Frequency StandardMetrologia, 1988
- Hyperfine optical pumping of cesium with a CW GaAs laserIEEE Journal of Quantum Electronics, 1974