title: Chirped-pulse millimeter-wave spectroscopy of Rydberg-Rydberg transitions.
abstract: Transitions between Rydberg states of Ca atoms, in a pulsed, supersonic atomic beam, are directly detected by chirped-pulse millimeter-wave spectroscopy. Broadband, high-resolution spectra with accurate relative intensities are recorded instantly. Free induction decay (FID) of atoms, polarized by the chirped pulse, at their Rydberg-Rydberg transition frequencies, is heterodyne detected, averaged in the time domain, and Fourier transformed into the frequency domain. Millimeter-wave transient nutations are observed, and the possibility of FID evolving to superradiance is discussed.
authors: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors: Kirill
authors: K
authors: Prozument
authors: Anthony P
authors: AP
authors: Colombo
authors: Yan
authors: Y
authors: Zhou
authors: G Barratt
authors: GB
authors: Park
authors: Vladimir S
authors: VS
authors: Petrović
authors: Stephen L
authors: SL
authors: Coy
authors: Robert W
authors: RW
authors: Field