Electromagnetically induced diffraction in sodium vapor.
By using a sodium atomic vapor we have observed a honeycomb-type multiple-diffraction pattern that was due to a grating induced optically by three noncollinear bichromatic excitation beams. In particular, when the two incident frequencies satisfy the two-photon resonance condition and the atomic density is high, the diffraction is enhanced by electromagnetically induced transparency, and strong Stokes and anti-Stokes components are generated in well-defined directions.
Harada
Ken-ichi
K
Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami Kumamoto-shi, Kumamoto 860-8555, Japan.
Tanaka
Satoshi
S
Kanbashi
Tatsuya
T
Mitsunaga
Masaharu
M
Motomura
Koji
K