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ICOP & ICPET 2017, 23 - : 1077-1080 Back to browse issues page
Optically controlled absorption of terahertz-infrared radiations in a graphene nanostructure under strong magnetic field
Jalil Shiri * 1, Malakzadeh 1
1- Imam Hossein University
Abstract:   (742 Views)

The optical properties of a weak probe light by applying coupling fields in Landau-quantized graphene nanostructure is investigated. In this structure the electromagnetic field of terahertz-infrared radiations interfere with the electromagnetic field of the short-wavelength probe field and this effect changes the absorption and dispersion characteristics of the probe field. The linear steady state properties of the graphene by means of perturbation theory and density matrix method are discussed. We show that the absorption of a light pulse can be switched from large absorption to nearly transparent case or vice versa by controlling the coupling field’s intensities and relative phase of the applied fields. Therefore, this model can be used as an all-optical switch which is suitable for next generation of future all optical quantum communicational system and networks

Keywords: Graphene nanostructure, Terahertz-infrared radiation, Dispersion and Absorption
Full-Text [PDF 706 kb]   (162 Downloads)    
Type of Study: Research | Subject: Special
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Shiri J, Malakzadeh. Optically controlled absorption of terahertz-infrared radiations in a graphene nanostructure under strong magnetic field. ICOP & ICPET. 2017; 23 :1077-1080
URL: http://opsi.ir/article-1-1207-en.html


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