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A deep optical cavity trap for atoms and molecules with rapid frequency and intensity modulation
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View: Figures


Image of FIG. 1.
FIG. 1.

The optical layout of the cavity trap.

Image of FIG. 2.
FIG. 2.

A comparison of trap lifetimes with and without fast stabilization.

Image of FIG. 3.
FIG. 3.

(a) The control voltage signal sent to strong beam AOM to vary the input power into the cavity. (b) The cavity transmission as a function of time while the input power is varied. (c) The error signal created by locking beam as the input intensity is modulated.

Image of FIG. 4.
FIG. 4.

(a) The PDH error signal produced while the strong beam is scanned in frequency. (b) A graph of cavity transmission as a function of cavity detuning.

Image of FIG. 5.
FIG. 5.

(a) The black curve shows the drift in piezo voltage which is used to lock the circuit after the strong beam was turned on at t = 30 s. The slow drift is due to mirror heating caused by the intra-cavity light. Also shown as the gray curve is the variation in cavity transmission over time. (b) The calculated radius of curvature of cavity mirrors with the intensity on the cavity mirrors.

Image of FIG. 6.
FIG. 6.

Graphs of the fraction of trapped atoms as a function of trap modulation frequency. The reduction in atom number indicates the location of the radial and axial trap frequencies. Significant loss also occurs at twice the trap frequencies.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A deep optical cavity trap for atoms and molecules with rapid frequency and intensity modulation