Momentum-resolved Raman spectroscopy of bound molecules in ultracold Fermi gas
نویسندگان
چکیده
The binding energy of Feshbach molecules from a two-component Fermi gas of 40K atoms has been experimentally measured with the momentum-resolved Raman spectroscopy. Comparing with the radiofrequency spectroscopy, in the present experiment the signal of unpaired (free atoms) and the bound molecules can be directly observed and the binding energy can be simultaneously determined in a single running experiment. The energy-momentum dispersion spectra of the ultracold Fermi gas in the BEC side are also measured and reconstructed. The present experimental technology of the momentum-resolved Raman spectroscopy can be easily extended to perform spatially momentum-resolved Raman spectroscopy and to obtain the response spectra of a homogeneous system in the local density approximation.
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