Vapor-cell frequency reference for short-wavelength transitions in neutral calcium

Abstract

We have characterized the molecular tellurium (Te${}_2$) spectrum in the vicinity of the 423nm ${}^1{S}_0{-}^1{P}_1$ and the 431nm ${}^3{P}_1{-}^3{P}_0$ transitions in neutral calcium. These transitions are relevant to optical clocks for atomic-beam characterization and cooling (423nm) and enhanced detection (431nm). The use of a Te${}_2$ vapor cell as a frequency reference has many advantages over other laser stabilization techniques, and we discuss an application to measuring the instability due to the second-order Doppler shift in a calcium beam clock.

References in corpus (6)

• Geodesy and metrology with a transportable optical clock
• A transportable optical lattice clock with $7\times 10^{-17}$ uncertainty
• An atomic clock with $1\times 10^{-18}$ room-temperature blackbody Stark uncertainty
• Microwave-clock timescale with instability on order of $10^{-17}$
• Development of a strontium optical lattice clock for the SOC mission on the ISS
• Absolute Te${}_2$ reference for barium ion at $455.4$nm

Cited by in corpus (4)

• Cold Beam Optical Clock with Multifrequency Spectroscopy
• Progress on Optical Clock Technology for Operational Timescales
• Competition between Factors Determining Bright versus Dark Atomic States within a Laser Mode
• Tellurium Spectrometer for ${}^1{\text{S}}_0-{}^1{\text{P}}_1$ Transitions in Strontium and Other Alkaline-Earth Atoms