Phase-dependent inversionless gain in a four-level atomic system with a closed interaction loop

徐卫华,; 吴金辉,; 高锦岳,

doi:10.1088/1009-1963/16/2/026

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…[27,28] And there are other papers considering a more complex atomic system -the four-level atomic system with the effects of SGC and the relative phase. [29][30][31][32][33] On the other hand, most of these studies related to SGC focused on the steady-state response of the medium. There are only a few studies of the effect of SGC on the transient gain properties.…”

Section: Introductionmentioning

confidence: 99%

Phase control of light amplification in steady and transient processes in an inverted-Y atomic system with spontaneously generated coherence

et al. 2014

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We investigate the effects of spontaneously generated coherence (SGC) on both the steady and transient gain properties in a four-level inverted-Y-type atomic system in the presence of a weak probe, two strong coherent fields, and an incoherent pump. For the steady process, we find that the inversionless gain mainly origins from SGC. In particular, we can modulate the inversionless gain by changing the relative phase between the two fields. Moreover, the amplitude of the gain peak can be enhanced and the additional gain peak can appear by changing the detuning of the coupling field. As for the transient process, the transient gain properties can also be dramatically affected by the SGC. Compared to the case without SGC, the transient gain can be greatly enhanced with completely eliminated transient absorption by choosing the proper relative phase between the two fields. And the inverted-Y-type system with SGC can be simulated in both atomic and semiconductor quantum well systems avoiding the conditions of SGC.

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Section: Introductionmentioning

confidence: 99%

Phase control of light amplification in steady and transient processes in an inverted-Y atomic system with spontaneously generated coherence

et al. 2014

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“…The gain property of a four-level atomic sysytem has been investigated, the results show that the phase of the closed-loop can manipulate the probe gain on the higher frequnency transition outside the closed-loop [24] . Li et.…”

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confidence: 99%

Phase control of electromagnetically induced transparency in a four-level system

Yang

Zhao

2010

SPIE Proceedings

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We present a theoretical study on the frequency position and the linetype of Electromagnetically Induced Transparency (EIT) in a four-level atomic system with a coupling field, two microwave fields and a probe field. The absorption spectrum which is characterized by two EIT windows is obtained by a weak probe field scanning corresponding transition. It can be found that the frequency position and the linetype of EIT change with the relative phase of the two microwave fields. The frequnecy interval reaches the minimum when the relative phase is reverse. If two microwave fields have the same strength and reverse phase, the absorption spectrum will exhibit an EIT. This proposes a way to controlling frequency position of EIT by modulating the relative phase between two fields.

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Cross Phase Modulation in a Δ-type Three-Level System

2019

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Phase-dependent inversionless gain in a four-level atomic system with a closed interaction loop

Cited by 6 publications

References 34 publications

Phase control of light amplification in steady and transient processes in an inverted-Y atomic system with spontaneously generated coherence

Phase control of light amplification in steady and transient processes in an inverted-Y atomic system with spontaneously generated coherence

Phase control of electromagnetically induced transparency in a four-level system

Cross Phase Modulation in a Δ-type Three-Level System

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