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Electromagnetically Induced Self-Imaging in Four-Level Doppler Broadening Medium
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作者 王春芳 王峰 杨利茹 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第9期50-53,共4页
We show the influences of temperature on the self-imaging in the coherent atomic system which consists of four-level 87Rb atoms. The different-direction self-imaging, the corresponding imaging quality, and the imaging... We show the influences of temperature on the self-imaging in the coherent atomic system which consists of four-level 87Rb atoms. The different-direction self-imaging, the corresponding imaging quality, and the imaging contrast ratio in this Doppler broadening medium are studied. As a result, the imaging-position linearly increases with the temperature, while the quality of the self-imaging does not show clear connection with the temperature. Due to the weaker mutual interference in the higher temperature, the contrast ratios in the two directions increase. The interesting results are important and may have potential applications in imaging storage and processing. 展开更多
关键词 electromagnetically Induced Self-Imaging in Four-Level Doppler Broadening medium AS EIT
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Simultaneous electromagnetically induced transparency and absorption in thermal atomic medium 被引量:1
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作者 Shangqing Liang Yunfei Xu Qiang Lin 《Chinese Optics Letters》 SCIE EI CAS CSCD 2017年第9期41-45,共5页
A three-level lambda system driven by multicolor control, pump, and probe fields is investigated. The pump and probe fields are derived from the same laser with opposite propagating directions. Due to the Doppler effe... A three-level lambda system driven by multicolor control, pump, and probe fields is investigated. The pump and probe fields are derived from the same laser with opposite propagating directions. Due to the Doppler effect, the zero group-velocity atoms face bichromatic fields, while other atoms face trichromatic fields. The atomic medium shows distinct characteristics and exhibits simultaneous electromagnetically induced transparency(EIT) and electromagnetically induced absorption(EIA) at two frequencies. EIT and EIA peaks have a fixed relationship with frequency, which is determined by the Doppler shifts. 展开更多
关键词 EIT EIA Simultaneous electromagnetically induced transparency and absorption in thermal atomic medium
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Factors affecting the spectrum of an electromagnetic light wave on scattering from a semisoft boundary medium
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作者 王涛 李晓庆 季小玲 《Chinese Optics Letters》 SCIE EI CAS CSCD 2014年第12期117-120,共4页
The spectrum of an electromagnetic light wave on scattering from a semisoft boundary medium is discussed within the accuracy of the first-order Born approximation. It is shown that spectral shifts and spectral switche... The spectrum of an electromagnetic light wave on scattering from a semisoft boundary medium is discussed within the accuracy of the first-order Born approximation. It is shown that spectral shifts and spectral switches are affected both by the polarization of the incident light wave and by the characters of the scat-tering medium. Moreover, numerical results show that the direction at which the spectral switch occurs is governed by the characters of the scattering medium, whereas the magnitude of the spectral switch is affected by the polarization of the incident light wave. 展开更多
关键词 wave Factors affecting the spectrum of an electromagnetic light wave on scattering from a semisoft boundary medium
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