نتایج جستجو برای: electromagnetically induced transparency
تعداد نتایج: 1002962 فیلتر نتایج به سال:
Recently reported metamaterial analogues of electromagnetically induced transparency enable a unique route to endow classical optical structures with aspects of quantum optical systems. This method opens up many fascinating prospects on novel optical components, such as slow light units, highly sensitive sensors and nonlinear devices. In particular, optical control of electromagnetically induce...
F. E. Becerra, R. T. Willis, S. L. Rolston, and L. A. Orozco* Joint Quantum Institute, Department of Physics, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA Departamento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Apdo. Post. 14-740, 07000 México, Distrito Federal, México...
Optimization of Thin, Nitrogen-Rich Silicon Oxynitrides Grown by Rapid Thermal Nitridation A. Ludsteck, J. Schulze, I. Eisele, W. Dietl, H. Chung, Z. Nenyei,* A. Bergmaier, and G. Dollinger Institute of Physics, EIT, Universität der Bundeswehr München, 85577 Neubiberg, Germany Mattson Thermal Products GmbH, 89160 Dornstadt, Germany Department of Physics, Technische Universität München, 85747 Ga...
We show how to eliminate the error caused by an incorrectly modeled boundary in electrical impedance tomography (EIT). In practical measurements, one usually lacks the exact knowledge of the boundary. Because of this the numerical reconstruction from the measured EIT–data is done using a model domain that represents the best guess for the true domain. However, it has been noticed that the inacc...
Liang He, Yu-xi Liu, S. Yi, C. P. Sun, and Franco Nori Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan Center for Theoretical Physics, Physics Department, Cen...
Near the condition of electromagnetically induced transparency in a three-level system, the absorption experienced by the weak probe laser beam interacting with one transition is very sensitive to the frequency detuning of the strong-coupling laser beam coupled to another transition. When the frequency detuning of the coupling laser is modulated at different frequencies, the resulting change in...
This paper reviews recent progress in the research on the initiation and propagation of CMEs. In the initiation part, several trigger mechanisms are discussed; In the propagation part, the observations and modelings of EIT waves/dimmings, as the EUV counterparts of CMEs, are described.
We discuss the inevitable dissipation of energy that must accompany the creation of a pulse-medium excitation state in a passive dielectric. We show that there is a minimum amount of energy that an optical pulse must deposit in the medium to create a given pulse-medium state and that energy deposited beyond this minimum value must be dissipated in the medium. We compare this notion of dissipati...
In this paper we examine the absorption and dispersion properties of a weak probe field via Electromagnetically Induced Transparency (EIT) in a four-level system. It is shown that under certain condition, using this model, the absorption cancellation is appeared and the medium becomes transparent to the weak probe field. It will be shown that the controlling of absorption and dispersion spectru...
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