| ATOMIC AND MOLECULAR PHYSICS |
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Observation of Photoassociation Spectra of Ultracold 174Yb Atoms at 1S0–3P1 Inter-Combination Line |
| LONG Yun1,2, XIONG Zhuan-Xian1, ZHANG Xi1,2, ZHANG Meng-Jiao1,2, LÜ Bao-Long1, HE Ling-Xiang1** |
1Key Laboratory of Atomic Frequency Standards (KLAFS), Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
2University of Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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LONG Yun, XIONG Zhuan-Xian, ZHANG Xi et al 2013 Chin. Phys. Lett. 30 073402 |
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Abstract Photoassociation (PA) of cold atoms is a key tool widely used for accurate determination of long-range molecular potentials, measurement and tuning of interatomic interactions, as well as creation of desired cold molecules. We report the observation of PA spectra of ultracold ytterbium (Yb) atoms at the 1S0–3P1 inter-combination line by detecting the resonant loss of atoms trapped in a crossed far-off-resonance trap (crossed-FORT). Eight vibrational levels in the 10+u molecular state are observed for PA laser detunings up to 1 GHz with respect to the atomic resonance. The photoassociation resonances have a Lorentzian shape and sub-MHz linewidths due to the ultra low temperature of the atoms, and the resonance positions agree well with that predicted by the semiclassical formula.
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Received: 23 April 2013
Published: 21 November 2013
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| PACS: |
34.50.Rk
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(Laser-modified scattering and reactions)
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34.10.+x
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(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))
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32.70.Cs
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(Oscillator strengths, lifetimes, transition moments)
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