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在Λ型三能级系统的基础上引入两个共振射频场, 通过详细讨论系统的探测吸收特性随两个射频场Rabi频率取不同值时的变化规律, 得出电磁诱导透明(EIT)的分裂规律以及EIT上出现增益现象的产生条件.研究结果表明: 两个射频场对系统所起的控制作用不同, 控制基态精细结构能级之间跃迁的射频场对EIT的分裂起作用, 而控制激发态精细结构能级之间跃迁的射频场不会导致EIT的分裂; 而且, 只有当控制基态精细结构能级之间跃迁的射频场的Rabi频率大于控制激发态精细结构能级之间跃迁的射频场的Rabi频率时, 才能产生EIT与增益相叠加的新特性.Two resonant radio frequency fields are added to lambda three-level system in this paper. By discussing the behaviors of probing field absorption profiles under the effect of different Rabi frequencies of two radio frequency fields, the splitting of electromagnetically induced transparency (EIT) can be seen and the overlapping between EIT and gain can be obtained. The results show that the two radio frequency fields have different control functions on the system. The radio frequency field which interacts with hyperfine levels of ground state plays a role in the splitting of EIT, but the radio frequency field which interacts with hyperfine levels of excited state does not work on it. In addition only when the Rabi frequency of radio frequency field interacting with hyperfine levels of ground state is greater than with hyperfine levels of excited state, can the new features about the overlapping between EIT and gain be obtained.
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Keywords:
- radio frequency field /
- electromagnetically induced transparency /
- gain /
- hyperfine levels
[1] Yannopapas V, Paspalakis E, Vitanov N V 2009 Phys. Rev. B 80 035104
[2] Wu M C, Liu W C 2011 Comput. Phys. Commun. 182 143
[3] Wang J 2010 Phys. Rev. A 81 033841
[4] Woods D, Naughton T J 2009 Appl. Math. Comput. 215 1417
[5] Wang Z P, Xu M C 2009 Opt. Commun. 282 1574
[6] Iftiquar S M 2008 Opt. Commun. 281 4951
[7] Fountoulakis A, Terzis A F, Paspalakis E 2010 Phys. Lett. A 374 3354
[8] Zhuo Z C, Su X M, Zhang Y S 2005 Phys. Lett. A 336 25
[9] Deng W W, Wu S P, Li G X 2012 Opt. Commun. 285 2668
[10] Jin X R, Lu Y H, Zheng H Y, Lee Y P, Rhee J Y, Kim K W, Jang W H 2011 Opt. Commun. 284 4766
[11] Wang Z L, Zheng G S, Wang S Q, Qin Q S, Zhou H L, Zhang J C 2012 Acta Phys. Sin. 61 127805 (in Chinese) [王治龙, 郑贵森, 王世钦, 秦青松, 周宏亮, 张加驰 2012 61 127805]
[12] Qin Q S, Ma X L, Shao Y, Yang X Y, Sheng H F, Yang J Z, Yin Y, Zhang J C 2012 Acta Phys. Sin. 61 097804 (in Chinese) [秦青松, 马新龙, 邵宇, 杨星瑜, 盛鸿飞, 杨靖忠, 尹瑶, 张加驰 2012 61 097804]
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[1] Yannopapas V, Paspalakis E, Vitanov N V 2009 Phys. Rev. B 80 035104
[2] Wu M C, Liu W C 2011 Comput. Phys. Commun. 182 143
[3] Wang J 2010 Phys. Rev. A 81 033841
[4] Woods D, Naughton T J 2009 Appl. Math. Comput. 215 1417
[5] Wang Z P, Xu M C 2009 Opt. Commun. 282 1574
[6] Iftiquar S M 2008 Opt. Commun. 281 4951
[7] Fountoulakis A, Terzis A F, Paspalakis E 2010 Phys. Lett. A 374 3354
[8] Zhuo Z C, Su X M, Zhang Y S 2005 Phys. Lett. A 336 25
[9] Deng W W, Wu S P, Li G X 2012 Opt. Commun. 285 2668
[10] Jin X R, Lu Y H, Zheng H Y, Lee Y P, Rhee J Y, Kim K W, Jang W H 2011 Opt. Commun. 284 4766
[11] Wang Z L, Zheng G S, Wang S Q, Qin Q S, Zhou H L, Zhang J C 2012 Acta Phys. Sin. 61 127805 (in Chinese) [王治龙, 郑贵森, 王世钦, 秦青松, 周宏亮, 张加驰 2012 61 127805]
[12] Qin Q S, Ma X L, Shao Y, Yang X Y, Sheng H F, Yang J Z, Yin Y, Zhang J C 2012 Acta Phys. Sin. 61 097804 (in Chinese) [秦青松, 马新龙, 邵宇, 杨星瑜, 盛鸿飞, 杨靖忠, 尹瑶, 张加驰 2012 61 097804]
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