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Doppler-free two-photon resonances for atom detection and sum frequency stabilization
Doppler-free two-photon atom
2011/8/29
We investigate the excitation of the 5D5/2 level in Rb atoms using counterpropagating laser beams, which are nearly resonant to the one-photon 5S1/2 !5P3/2 and 5P3/2 ! 5D5/2 transitions, ensuring that...
Ultra-bright biphoton emission from an atomic vapor based on Doppler-free four-wave-mixing and collective emission
atomic vapor Doppler-free four-wave-mixing biphoton emission
2010/4/12
We propose a novel `butterfly' level scheme to generate highly correlated photon pairs from atomic vapors. With multi-photon Doppler-free pumping, background Rayleigh scattering is dipole-forbidden an...
Doppler-free Adiabatic Self-Induced Transparency
Doppler-free Adiabatic Self-Induced Transparency
2010/4/9
We demonstrate that a Doppler broadened two-level medium can be made transparent to a laser pulse by an appropriate adiabatic variation of the laser field amplitude and its nominal detuning. This new ...