Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
850977 | Optik - International Journal for Light and Electron Optics | 2013 | 4 Pages |
Abstract
All-optical switching consisting of Bragg-spaced quantum dots layers is investigated in theory. The quantum dots are applied in this switch for their spin-dependent polarization and ultrafast full recovery of the sample after passage of a circle-polarized control light. The circular dichroism and birefringence are induced, and the polarization of the signal pulse is changed, which can be applied to design the all-optical switch. This switching structure shows great advantages of lower requirement of pump light intensity, and is a promising candidate for the ultrafast all-optical switching devices at room temperature comparing to the similar quantum well structure.
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Engineering (General)
Authors
Chunchao Yu, Tao Wang,