We present experimental results on nondegenerate four-wave mixing in a thermal vapor cell
of rubidium atoms via highly excited Rydberg states. We observe sub-Doppler spectral …

Four-wave mixing can be used to generate coherent output beams, with frequencies difficult
to acquire in commercial lasers. Here, a single narrow external cavity diode laser locked to …

We report on observations of four-wave mixing in rubidium vapor via two-photon resonant
excitation with nd and (n+ 2) s states, for n= 14–20. The intensity of the generated beam is …

Multiphoton processes in dense atomic vapors such as four-wave mixing or coherent blue
light generation are typically viewed from single-atom perspective. Here we study the …

We investigate the four-wave mixing (FWM) nonlinearity in an ensemble of cold Rydberg
atoms with each of them regarded as a double-ladder system. The interaction is studied from …

We show that the four-wave mixing (FWM) processes in a multi-Zeeman level atomic system
can be enhanced and suppressed by changing the polarization of one of the pump beams …

The polarization characteristics of the signal wave produced in Rb vapor by difference-
frequency, parametric four-wave mixing (FWM) has been investigated for either ultrafast (∼ …

We investigate the second-order fluorescence (FL) signals of Pr3+: YSO both theoretically
and experimentally. For the first time, the Autler–Townes (AT) splitting effect of FL spectrum …

The Rydberg spectra of atoms and small molecules offers an experimentally convenient
probe for exploring the exchange of energy between Rydberg electrons and other forms of …

Polarization properties of pure four-wave mixing (FWM) and dressed-FWM processes in a
two-level system and a cascade three-level atomic system are theoretically and …