Absolute frequency measurements and hyperfine structures of the molecular iodine transitions at 578 nm

Abstract

We report absolute frequency measurements of 81 hyperfine components of the rovibrational transitions of molecular iodine at 578 nm using the second harmonic generation of an 1156-nm external-cavity diode laser and a fiber-based optical frequency comb. The relative uncertainties of the measured absolute frequencies are typically $1.4\times 10^{-11}$. Accurate hyperfine constants of four rovibrational transitions are obtained by fitting the measured hyperfine splittings to a four-term effective Hamiltonian including the electric quadrupole, spin-rotation, tensor spin-spin, and scalar spin-spin interactions. The observed transitions can be good frequency references at 578 nm, and are especially useful for research using atomic ytterbium since the transitions are close to the ${}^1{S}_0{-}^3{P}_0$ clock transition of ytterbium.

References in corpus (11)

• An atomic clock with $10^{-18}$ instability
• Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms
• Gauge fields for ultracold atoms in optical superlattices
• Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
• Quantum Computing and Quantum Simulation with Group-II Atoms
• One-Dimensional Optical Lattice Clock with a Fermionic 171Yb Isotope
• On the relation between uncertainties of weighted frequency averages and the various types of Allan deviations
• A narrow-linewidth external cavity quantum dot laser for high-resolution spectroscopy in the near-infrared and yellow spectral ranges
• Doppler-free spectroscopy of molecular iodine using a frequency-stable light source at 578 nm
• A compact iodine-laser operating at 531 nm with stability at the 10${}^{-12}$ level and using a coin-sized laser module
• Doppler Spectroscopy of an Ytterbium Bose-Einstein Condensate on the Clock Transition

Cited by in corpus (8)

• High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL
• Demonstration of the nearly continuous operation of an ${}^{171}$Yb optical lattice clock for half a year
• Uncertainty evaluation of an ${}^{171}$Yb optical lattice clock at NMIJ
• Absolute Frequency Atlas from 915 nm to 985 nm based on Laser Absorption Spectroscopy of Iodine
• Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm
• Absolute frequency measurement of molecular iodine hyperfine transitions at 647 nm
• Frequency stabilization of a 739 nm laser to an $I_2$ spectrum for trapped Ytterbium ions
• Measurement of transition frequencies and hyperfine constants of molecular iodine at 520.2 nm