Cavity-enhanced frequency up-conversion in rubidium vapour

Abstract

We report the first use of a ring cavity to both enhance the output power and dramatically narrow the linewidth ($<1$MHz) of blue light generated by four wave mixing in a rubidium vapour cell. We find that the high output power available in our cavity-free system leads to power broadening of the generated blue light linewidth. Our ring cavity removes this limitation, allowing high output power and narrow linewidth to be achieved concurrently. As the cavity blue light is widely tunable over the ${}^{85}$Rb 5S${}_{1/2}F=3$ $\to$ 6P${}_{3/2}$ transition, this narrow linewidth light would be suitable for second-stage laser cooling, which could be valuable for efficient ${}^{85}$Rb BEC production.

arXiv comment5 pages, 3 figures

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Cited by in corpus (10)

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• Parametric wave mixing enhanced by velocity insensitive two-photon excitation in Rb vapour
• Collimated UV light generation by two-photon excitation to a Rydberg state in Rb vapor
• Optical cavity for enhanced parametric four-wave mixing in rubidium
• Phase matching alters spatial multiphoton processes in dense atomic ensembles
• Creating a switchable optical cavity with controllable quantum-state mapping between two modes
• Saturation and alternate pathways in four-wave mixing in rubidium
• Characterization of near-infrared to telecom frequency conversion in a rubidium-filled hollow-core photonic-crystal fiber
• Defying Conventional Wisdom in Spectroscopy: Power Narrowing on IBM Quantum