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In a novel microlaser configuration with Ramsey separated-field cavity, we investigate a two-level atomic beam interacting with a single-mode high-Q Ramsey cavity, which is composed by two separated resonators. By using the well-known Ramsey cavity, one can recover the characters of microlaser even with a high flux atomic beam. 相似文献
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Application of Electron-Shelving Detection via 423 nm Transition in Calcium-Beam Optical Frequency Standard
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A new scheme of small compact optical frequency standard based on thermal calcium beam with application of 423 nm shelving detection and sharp-angle velocity selection detection is proposed. Combining these presented techniques, we conclude that a small compact optical frequency standard based on thermal calcium beam will outperform the commercial caesium-beam microwave dock, like the 5071 Cs clock (from Hp to Agilent, now Symmetricom company), both in accuracy and stability. 相似文献
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The phase diagram of the one-dimensional Bose-Hubbard model describing interacting bosons in optical lattice is investigated with the variational approach. This method can also be generalized to the two-dimensional case. 相似文献
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The kinetic theory of (2+4)-level atoms in σ + σ- laser fields is presented.We systemically discuss friction coefficient,momentum diffusion tensor and atomic temperature based on the Fokker-Planck equation.This cooling system is much like that of a (1+3)-level atom,and the temperature is still limited to the Doppler temperature.Since this cooling system has not been investigated before,this work may be regarded as a necessary complement to the laser cooling theory. 相似文献
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