| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1539559 | Optics Communications | 2009 | 5 Pages |
Abstract
A theoretical investigation is carried out into the effect of spontaneously generated coherence (SGC) on Kerr nonlinearity of a four-level N-type system. It’s found that the Kerr nonlinearity can be obviously enhanced with SGC present. We attribute the enhancement of Kerr nonlinearity mainly to the generation of extra coherences induced by the superposition of the two SGC channels, and when the superposition is controlled by the interference between two SGC channels properly, the maximal Kerr nonlinearity does not only enter the electromagnetically induced transparency window as the spontaneous generated coherences intensify, but also gets enhanced about 10 times with very large SGC coefficients than that with no SGC effect.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Wen-juan Jiang, Xiang’an Yan, Jian-ping Song, Huai-bin Zheng, Chuanxing Wu, Bao-yin Yin, Yanpeng Zhang,