Observation of an electromagnetically induced grating in cold sodium atoms
Abstract
We have observed diffraction signals by a grating originating from electromagnetically induced transparency (EIT) in a three-level Λ system of cold sodium atoms. Theoretical and experimental analyses of this phenomenon, called the electromagnetically induced grating (EIG), have revealed that EIG spectra exhibit background-free, Lorentzian signal profiles regardless of the pump frequencies, making a clear contrast to the case of ordinary EIT spectra.
- Publication:
-
Physical Review A
- Pub Date:
- June 1999
- DOI:
- 10.1103/PhysRevA.59.4773
- Bibcode:
- 1999PhRvA..59.4773M
- Keywords:
-
- 42.50.Gy;
- 32.80.Pj;
- 42.50.Md;
- Effects of atomic coherence on propagation absorption and amplification of light;
- electromagnetically induced transparency and absorption;
- Optical cooling of atoms;
- trapping;
- Optical transient phenomena: quantum beats photon echo free-induction decay dephasings and revivals optical nutation and self-induced transparency