Bichromatic two-photon coherent excitation of sodium to provide a dual-wavelength guidestar.
A bichromatic sodium guide star based on two-photon coherent excitation followed by cascade emission is considered. Results of density matrix computations, including Doppler averaging, are presented for both a three-level model and the full hyperfine structure of the sodium 3S, 3P, and 4S levels. These results indicate that the proposed scheme for a bichromatic guide star is feasible.
Biegert
J
J
Diels
J C
JC
Milonni
P W
PW