Optics Letters · 2001 · 107 citations · 15 references
Natural SciencesMaterials ScienceOpticsPhotonicsQuantum MechanicsLaser CoolingLaser PhysicsOptical ResonatorsPhotonic MaterialsQuantum DotsQuantum OpticsAtomic Transition FrequenciesCavity Quantum ElectrodynamicsFrequency TuningMicrospheresResonant CavitiesSpectroscopic Transition FrequenciesTunable Optical ResonatorsWhispering-gallery-mode Resonators
The study aims to provide a high‑Q optical resonator whose coupling can be tuned to match emitters’ transition frequencies for cavity‑QED experiments. The tuning is achieved by a novel method that stretches a two‑stem fused‑silica microsphere. The authors tuned the whispering‑gallery modes of the resonator by nearly 1 nm (≈0.5 FSR or 10^6 linewidths) at 800 nm, and showed that this tuning works in UHV and low‑temperature conditions, enabling future experiments with laser‑cooled atoms or single quantum dots.
We have tuned the whispering gallery modes of a fused silica microresonator over nearly 1 nm at 800 nm, i.e. over 0.5 FSR or 10^6 linewidths of the resonator. This has been achieved by a new method based on the stretching of a two-stem microsphere. The devices described below will permit new Cavity-QED experiments with this high-Q optical resonator when it is desirable to optimize its coupling to emitters with given transition frequencies. The tuning capability demonstrated here is compatible with both UHV and low temperature operation, which should be useful for future experiments with laser cooled atoms or single quantum dots.
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Very low threshold whispering-gallery-mode microsphere laser
Vahid Sandoghdar, François Treussart, J. Hare et al. · Physical Review A · 1996 · 492 citations