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3 Computational Methods in Science and Technology

3 2010

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EIT Four-Level Lambda Scheme of Cold Rubidium Atoms

100%

Brzostowski B. , Cao Long V. , Dinh Xuan K. , Grabiec B. , Vu Ngoc S. , Żaba A.

Computational Methods in Science and Technology

2010

tom Vol. spec. iss. (2)

13-16

In this paper, using the general master equation in the dipole interaction and the rotating-wave approximation, we will explain the experimental results obtained by Warsaw Group for Electromagnetically Induced Transparency in four-level lambda scheme of cold rubidium atoms. The theoretical calculations are in good agreement with the experimental data.

Magneto-optical Trap: Fundamentals and Realization

100%

Kowalski K. , Cao Long V. , Dinh Xuan K. , Głódź M. , Nguyen Huy B. , Szonert J.

Computational Methods in Science and Technology

2010

tom Vol. spec. iss. (2)

115-129

Principles of laser cooling and trapping of atoms with regard to the magneto-optical trap (MOT) are described. Some details of the MOT and the accompanying measuring system, both constructed at the Institute of Physics, PAS in Warsaw, are given. Two examples of experimental results are shown.

Electromagnetically Induced Transparency

100%

Kowalski K. , Cao Long V. , Dinh Xuan K. , Głódź M. , Nguyen Huy B. , Szonert J.

Computational Methods in Science and Technology

2010

tom Vol. spec. iss. (2)

131-145

In the initial part of the paper, the principles of the electromagnetically induced transparency (EIT) in basic three-level schemes are sketched, and some applications of this phenomenon are described. Next a presentation follows of a five-level EIT model of Bloch equations, which was developed to reconstruct multipeak cascade-EIT spectra registered in a sample of cold 85Rb atoms in MOT. The respective experiment is also described. The achieved good agreement between theory and performed experiment is documented and discussed.