Article

Experimental identification of electromagnetically induced transparency in magnetized plasma.

Institute of Space, Astrophysical and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan.
Physical Review Letters (impact factor: 7.37). 02/2012; 108(7):075003. pp.075003
Source: PubMed

ABSTRACT We report the first experimental identification of the new wave branch at electron cyclotron frequency produced by the injection of a frequency-matched intense pump wave in magnetized plasma [A. G. Litvak and M. D. Tokman, Phys. Rev. Lett. 88, 095003 (2002); G. Shvets and J. S. Wurtele, Phys. Rev. Lett. 89, 115003 (2002)], which is a classical phenomenon analogous to electromagnetically induced transparency (EIT) in quantum systems. By using a frequency-sweep interferometer, we directly detected the dispersion relation of the plasma EIT branch for propagation parallel to the background magnetic field. The bandwidth of the EIT window was correlated with the pump-wave electric field and was found to agree with the theoretical prediction.

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Keywords

background magnetic field
 
classical phenomenon analogous
 
EIT
 
EIT window
 
electron cyclotron frequency
 
first experimental identification
 
frequency-matched intense pump wave
 
frequency-sweep interferometer
 
J. S. Wurtele
 
M. D. Tokman
 
new wave branch
 
plasma [A. G. Litvak
 
plasma EIT branch
 
pump-wave electric field
 
theoretical prediction
 

Eiichirou Kawamori