Lasing on a narrow transition in a cold thermal strontium ensemble

Abstract

Highly stable laser sources based on narrow atomic transitions provide a promising platform for direct generation of stable and accurate optical frequencies. Here we investigate a simple system operating in the high-temperature regime of cold atoms. The interaction between a thermal ensemble of ${}^{88}$Sr at mK temperatures and a medium-finesse cavity produces strong collective coupling and facilitates high atomic coherence which causes lasing on the dipole forbidden ${}^1$S${}_0{\leftrightarrow }^3$P${}_1$ transition. We experimentally and theoretically characterize the lasing threshold and evolution of such a system, and investigate decoherence effects in an unconfined ensemble. We model the system using a Tavis-Cummings model, and characterize velocity-dependent dynamics of the atoms as well as the dependency on the cavity-detuning.

arXiv comment9 pages, 7 figures

References in corpus (19)

• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
• Atomic clock performance beyond the geodetic limit
• Single-Ion Atomic Clock with $3\times 10^{-18}$ Systematic Uncertainty
• 1.5 $\mu$m lasers with sub 10 mHz linewidth
• Optical clock intercomparison with $6\times 10^{-19}$ precision in one hour
• Prospects for a mHz-linewidth laser
• Mesoscopic Entanglement Induced by Spontaneous Emission in Solid-State Quantum Optics
• An ultrastable silicon cavity in a continuously operating closed-cycle cryostat at 4 K
• Frequency measurements of superradiance from the strontium clock transition
• A Cold-Strontium Laser in the Superradiant Crossover Regime
• Pulse delay time statistics in a superradiant laser with calcium atoms
• Lasing in the superradiant crossover regime
• Fast Excitation and Photon Emission of a Single-Atom-Cavity System
• Ramsey-Bordé matter-wave interferometry for laser frequency stabilization at $10^{-16}$ frequency instability and below
• Driven-Dissipative Quantum Dynamics in Ultra Long-lived Dipoles in an Optical Cavity
• Active optical frequency standard using sequential coupling of atomic ensembles
• Realization of phase locking in good-bad-cavity active optical clock
• Dynamics of bad-cavity enhanced interaction with cold Sr atoms for laser stabilization
• Spin Squeezing by means of Driven Superradiance

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