The Effect of Coherent Population Trapping and the Propagation of High Intensity Two-Frequency Laser Beams

被引:0
作者
Vdovin, Yu. A. [1 ]
Efimov, A. E. [1 ]
机构
[1] Moscow Engn Phys Inst, Moscow 115409, Russia
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中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We shall examine the interaction of a high intensity two-frequency laser beam with atoms of gas having a Lambda-type three level scheme of excitation, which leads to coherent population trapping. Furthermore, we shall take into account the elastic and inelastic collisions of atoms and laser beam phase fluctuations. Level populations will be calculated on the basis of "dressed" states. We also want to investigate the decrease of incident beam intensity with depth of penetration. We will show that the optical-collisional nonlinearity results in a significant increase of the depth of penetration. Finally, we will consider the laws of attenuation for different detunings of laser frequencies.
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页码:425 / 436
页数:12
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