Influence of Doppler effect on the phenomenon of electromagnetically induced transparency

被引:0
|
作者
Tao, Qiyong [1 ]
Zhang, Guiyin [1 ]
Zheng, Haiming [2 ]
机构
[1] North China Elect Power Univ, Sch Math & Phys, Baoding 071003, Peoples R China
[2] North China Elect Power Univ, Dept Mech Engn, Baoding 071003, Peoples R China
来源
关键词
electromagnetically induced transparency(EIT); Doppler effect; Aulter-Townes; ATOMIC SYSTEM; LIGHT;
D O I
10.1117/12.2247742
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Electromagnetically induced transparency (EIT) is a significant nonlinear optical phenomenon. Based on the theory of density matrix equation, we presented the influence of Doppler effect on EIT. A cascade type three-level system and Na atomic vapor is adopted during the course. The results showed that EIT is determined by Rabi frequency of the couple and probing field. It is independent of temperature usually. But when we take Doppler effect into account, it is found that the full transparency appeared at the condition of Omega(P)= 0.01GHz, Omega(C)= 1GHz will vary with temperature. An obvious transparent window can be observed only when the temperature is less than 50K. With the increase of temperature, EIT phenomenon disappeared quickly. At room temperature, we can see that the double peaks of Aulter-Townes will instead of the EIT transparent window as Rabi frequency of the couple field is larger than 1.5GHz.
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页数:8
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