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Spectrally resolved coherent transient signal for ultracold rubidium molecules |
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| Authors: | F Eimer F Weise A Merli S Birkner F Sauer L W?ste A Lindinger R A?ano?lu C P Koch W Salzmann T Mullins S G?tz R Wester M Weidemüller |
| Institution: | 1. Institut für Experimentalphysik, Freie Universit?t Berlin, Arnimallee 14, 14195, Berlin, Germany 2. Institut für Theoretische Physik, Freie Universit?t Berlin, Arnimallee 14, 14195, Berlin, Germany 3. Physikalisches Institut, Universit?t Freiburg, Hermann Herder Str. 3, 79104, Freiburg, Germany |
| Abstract: | We present spectrally resolved pump-probe experiments on the photoassociation of ultracold rubidium atoms with shaped ultrashort laser pulses. The pump pulse causes a free-bound transition leading to a coherent transient signal of rubidium molecules in the first excited state. In order to achieve a high frequency resolution the bandwidth of the pump pulse is reduced to a few wavenumbers. The frequency dependence of the transient signal close to the D1 atomic resonance is investigated for characteristic pump-probe delay times. The observed spectra, which show a pronounced dip for pump-probe coincidence, are interpreted using quantum dynamical calculations. |
| Keywords: | PACS" target="_blank">PACS 33 80 -b Photon interactions with molecules 32 80 Qk Coherent control of atomic interactions with photons 42 50 Md Optical transient phenomena: quantum beats photon echo free-induction decay dephasings |
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