Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1534900 | Optics Communications | 2014 | 5 Pages |
Abstract
Propagation of Gaussian pulse in a defect dielectric medium in the presence of spin coherence is theoretically investigated. We consider a dielectric slab doped with semiconductor quantum well nanostructure. We show that the reflected and transmitted pulses can be tuned from subluminal to superluminal by changing spin coherence in a slab. Our result predicts that the group velocity of the reflected and transmitted pulses in different wavelengths depend on the thickness of the slab, intensity of the coupling field and relative phase between applied fields.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Seyyed Hossein Asadpour, H. Rahimpour Soleimani,