Electromagnetically induced transparency in an open V-type molecular system

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.063419· OSTI ID:21550142

Lazoudis, A; Ahmed, E H; Qi, P; Lyyra, A M ^[1]; Kirova, T ^[1]; Huennekens, J ^[2]

---

1. Department of Physics, Temple University, Philadelphia, Pennsylvania 19122-6082 (United States)
2. Department of Physics, 16 Memorial Drive East, Lehigh University, Bethlehem, Pennsylvania 18015 (United States)

We report the experimental observation of electromagnetically induced transparency (EIT) in an inhomogeneously broadened V-type Na{sub 2} molecular system. The experiment is performed with both co- and counterpropagating arrangements for the propagation directions of the coupling and probe laser beams. In our theoretical model we employ the density matrix formalism, as well as perturbative methods for obtaining the probe field absorption profile for both open and closed systems. Simulations of the experimental data show excellent agreement with the predictions derived from the basic theory. Our fluorescent intensity measurements show that, in the copropagating configuration, the EIT plus saturation window depth is about 95%, while under similar conditions in the counterpropagating geometry we observed 40%-45% reduction in the fluorescence signal around the line center. To separate the two simultaneously occurring mechanisms in a V-type system (i.e., EIT and saturation) that are induced by the coupling field, we have carried out theoretical calculations which show that, in the copropagating case, a significant fraction of the depth of the dip is due to the coherent effect of EIT. When the coupling and probe beams are in the counterpropagating configuration, the dip is mostly due to saturation effects alone.

• OSTI ID: 21550142
• Journal Information: Physical Review. A, Vol. 83, Issue 6; Other Information: DOI: 10.1103/PhysRevA.83.063419; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
COUPLING
DENSITY MATRIX
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FLUORESCENCE
GEOMETRY
LASERS
MOLECULES
OPACITY
PHOTON BEAMS
PROBES
SIGNALS
SIMULATION
BEAMS
DATA
EMISSION
INFORMATION
LUMINESCENCE
MATHEMATICS
MATRICES
NUMERICAL DATA
OPTICAL PROPERTIES
PHOTON EMISSION
PHYSICAL PROPERTIES
RADIATIONS
SORPTION