Magnetic-field quantum beats in two-photon free-induction decay.

Magnetic-field quantum beats are observed in Doppler-free two-photon free-induction decay. The 3S-4D transition in atomic sodium vapor is studied with fields up to 300 G. A strong dependence on the polarization of the excitation pulses is observed.

Effects of magnetic fields on four-wave mixing processes in atomic vapors.

We have observed the effects of magnetic fields on four-wave mixing processes in atomic vapors. We have studied coherent vacuum-ultraviolet generation in Sr vapor via the process omega(1) + omega(2) + omega(3) ? omega(4) in fields of up to 50 kG. Magnetic tuning of the resonances of the third-order nonlinear susceptibility X((3)) was used to modify the dependence of the sum-frequency output power on the generated wavelength.