The electromagnetically induced transparency in the Y-type four-level atom system at low light levels

2005 ◽  
Vol 48 (5) ◽  
pp. 593 ◽  
Author(s):  
Liying ZHANG
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Low Light ◽  
Light Levels ◽  
Level Atom ◽  
Induced Transparency ◽  
Atom System

scholarly journals Phase-dependent electromagnetically induced transparency in a four-level atom system

2011 ◽  
Vol 60 (10) ◽  
pp. 104205
Author(s):  
Yang Li-Jun ◽  
Ma Li-Jin ◽  
Lyu Dong-Qi ◽  
Zhang Lian-Shui
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Level Atom ◽  
Induced Transparency ◽  
Atom System

Higher order nonlinearities in a non-Doppler free geometryThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at University of Windsor, Windsor, Ontario, Canada on 21–26 July 2008.

2009 ◽  
Vol 87 (7) ◽  
pp. 843-850 ◽  
Author(s):  
Andal Narayanan ◽  
Archana Sharma ◽  
T. M. Preethi ◽  
H. Abheera ◽  
Hema Ramachandran
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Level Density ◽  
Kerr Nonlinearity ◽  
Low Light ◽  
Atomic Systems ◽  
Fourth Level ◽  
All Optical ◽  
Multi Level ◽  
Induced Transparency ◽  
Photon Resonance

Multi-level gaseous atomic systems showing electromagnetically induced transparency (EIT) phenomenon also exhibit low light intensity nonlinear optical phenomena. This is primarily due to the supression of linear susceptibility for the probe light during EIT. Therefore under EIT, nonlinear interactions become appreciable even at very low light intensities. In particular, Kerr nonlinearity in N systems irradiated by three fields has been both experimentally and theoretically investigated. In this paper, we report an all optical observation of an absorptive three-photon resonance feature, of subnatural width, in a N level scheme of gaseous rubidium, at room temperature, in a novel geometry of three independent beams. The non-Doppler free configuration of the beam in which the absorption is seen is the first such feature reported in a beam that is not directly taking part in the transparency effect. We have demonstrated the velocity selective nature of this absorption and studied the contrast dependence on detuning from the fourth level. Density matrix calculations have been carried out for this geometry, the results of which are in qualitative agreement with the experiment.

The Response time of Electromagnetically Induced Transparency in a Λ-type Atom System

2014 ◽  
Vol 20 (2) ◽  
pp. 110-118
Author(s):  
郎晶群 LANG Jing-qun ◽  
许静平 XU Jing-ping ◽  
羊亚平 YANG Ya-ping
Keyword(s):  
Response Time ◽  
Electromagnetically Induced Transparency ◽  
Induced Transparency ◽  
Atom System

scholarly journals Nonlinearity of Microwave Electric Field Coupled Rydberg Electromagnetically Induced Transparency and Autler-Townes Splitting

2019 ◽  
Vol 9 (8) ◽  
pp. 1720 ◽  
Author(s):  
Liping Hao ◽  
Yongmei Xue ◽  
Jiabei Fan ◽  
Yuechun Jiao ◽  
Jianming Zhao ◽  
...  
Keyword(s):  
Rabi Frequency ◽  
Room Temperature ◽  
Microwave Field ◽  
Electromagnetically Induced Transparency ◽  
Field Measurements ◽  
Coupling Laser ◽  
Field Coupling ◽  
Small Probe ◽  
Level Atom ◽  
Induced Transparency

An electromagnetically induced transparency (EIT) of a cascade-three-level atom involving Rydberg level in a room-temperature cell, formed with a cesium 6 S 1 / 2 -6 P 3 / 2 -66 S 1 / 2 scheme, is employed to detect the Autler-Townes (AT) splitting resulted with a 15.21-GHz microwave field coupling the 66 S 1 / 2 →65 P 1 / 2 transition. Microwave field induced AT splitting, f A T , is characterized by the distance of peak-to-peak of an EIT-AT spectrum. The f A T dependence on the microwave Rabi frequency, Ω M W , demonstrates two regions, the strong-coupling linear region, f A T ≈ Ω M W and the weak-coupling nonlinear region, f A T ≲ Ω M W . The f A T dependencies on the probe and coupling Rabi frequency are also investigated. Using small probe- and coupling-laser, the Rabi frequency is found to enlarge the linear regime and decrease the uncertainty of the microwave field measurements. The measurements agree with the calculations based on a four-level atomic model.

scholarly journals Distinction of electromagnetically induced transparency and Autler-Towners splitting in a Rydberg-involved ladder-type cold atom system

2021 ◽  
Vol 29 (8) ◽  
pp. 11406
Author(s):  
Zhonghua Ji ◽  
Yuechun Jiao ◽  
Yongmei Xue ◽  
Liping Hao ◽  
Jianming Zhao ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Cold Atom ◽  
Induced Transparency ◽  
Atom System
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