Measurements of trap parameters of a magneto-optical trap by parametric resonance
Journal Article
·
· Physical Review. A
- School of Physics and Center for Near-field Atom-photon Technology, Seoul National University, Seoul 151-742 (Korea, Republic of)
- Department of Physics, Chonnam National University, Gwangju 500-757 (Korea, Republic of)
We present a method to measure the trap frequency or the spring constant of a magneto-optical atom trap via the parametric resonance. When the intensity of the cooling laser is modulated at around twice its resonant trap frequency, the trapped atoms are parametrically excited and divided into two groups oscillating with the motional phase difference of {pi}. We find that one can measure the natural trap frequency as the modulation amplitude is decreased down to its threshold value. The experimental results are in good agreement with the three-dimensional Doppler cooling theory based on the rate equation model.
- OSTI ID:
- 20650446
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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