Stability Transfer between Two Clock Lasers Operating at Different Wavelengths for Absolute Frequency Measurement of Clock Transition in 87Sr

Abstract

We demonstrated transferring the stability of one highly stable clock laser operating at 729 nm to another less stable laser operating at 698 nm. The two different wavelengths were bridged using an optical frequency comb. The improved stability of the clock laser at 698 nm enabled us to evaluate the systematic frequency shifts of the Sr optical lattice clock with shorter averaging time. We determined the absolute frequency of the clock transition 1S0 - 3P0 in 87Sr to be 429 228 004 229 873.9 (1.4) Hz referenced to the SI second on the geoid via International Atomic Time (TAI).

References in corpus (8)

• A High Phase-Space-Density Gas of Polar Molecules
• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Nuclear Spin Effects in Optical Lattice Clocks
• The absolute frequency of the 87Sr optical clock transition
• Force-insensitive optical cavity
• Improved frequency measurement of a one-dimensional optical lattice clock with a spin-polarized fermionic ${}^{87}$Sr isotope
• Measuring the frequency of a Sr optical lattice clock using a 120-km coherent optical transfer
• An Optical Lattice Clock with Spin-polarized 87Sr Atoms

Cited by in corpus (15)

• Geodesy and metrology with a transportable optical clock
• Comparison of Two Independent Sr Optical Clocks with 1e-17 Stability at 10^3 s
• Blackbody radiation shift in the Sr optical atomic clock
• Realization of a time-scale with an accurate optical lattice clock
• Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
• Long term measurement of the ${}^{87}$Sr clock frequency at the limit of primary Cs clocks
• Direct comparison of optical lattice clocks with an intercontinental baseline of 9 000 km
• A compact and efficient strontium oven for laser-cooling experiments
• Providing 1E-16 short-term stability of a 1.5 μm laser to optical clocks
• End-to-end topology for fiber comb based optical frequency transfer at the $10^{-21}$ level
• SI-traceable measurement of an optical frequency at low $10^{-16}$ level without a local primary standard
• Frequency ratio measurement of 171Yb and 87Sr optical lattice clocks
• Absolute frequency measurement with uncertainty below $1\times 10^{-15}$ using International Atomic Time
• Formation of deeply bound ultracold Sr_2 molecules by photoassociation near the ^1S + ^3P_1 intercombination line
• Orders-of-magnitude improvement in precision spectroscopy of an inner-shell orbital clock transition in neutral ytterbium