Combinational absorption of the two-photon field in a dispersive medium by an impurity atom

B. A. Veklenko

Tian Xing-xia

In this paper,atoms in the ground state are excited by the saturating laser in a two-level system.When the weak probe laser scans the system,we research the relationships between the absorption and chromatic dispersion with the linear polarization rate of the system.By analyzing the absorption and dispersion curve through numerical simulation,the optical properties of the medium in the two-photon fields can be obtained.

清 西川, 昭 佐道, Hiroshi Sekiya +3 more

Zhiyu Li, Zhou Jian-Ying, 中山大学光电材料与技术国家重点实验室，广州 510275

A two_dimensional array of resonant absorptive and dispersive medium is proposed. The transmission,reflection and absorption spectra of optical field transmitting in the structure are calculated. The photonic band gap caused by resonance(PBG), similar as the case of one_dimensional active photonic crystal, is observed. It’s found that the resonance between the border of the Brillouin zone and the resonant center of the atom in the array is the key condition for the formation of the PBG. Further discussion is carried on the study of the dependence of transmission spectrum on the structure,the resonant center and the absorption linewidth of the atoms in the array.

Hiroshi Sekiya, Seikyo Tsunekawa, Kiyoshi Nishikawa +1 more

Moorad Alexanian, S. Bose