Direct observation of the sub-Doppler trap in a parametrically driven magneto-optical trap
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)
The double structure potential predicted in the atomic cloud of a magneto-optical trap by one- (Doppler part) and two-photon process (sub-Doppler part) is experimentally observed and studied through the parametric excitation with the modulation of cooling laser intensities. Modulating the intensity of the cooling laser at around twice its resonant frequency of Doppler part, the atoms in Doppler part are divided and they oscillate reciprocally with finite amplitude due to the nonlinearity of the trap, and the others in sub-Doppler part are not influenced. By the modulation, we can investigate the sub-Doppler part spatially without Doppler part and also measure the temperature of sub-Doppler part independently.
- OSTI ID:
- 20640872
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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