Coherent hole-burnings induced by a bichromatic laser field
- 作者：Qiong-Yi He ; Xiao-Gang Wei ; Jin-Hui Wu ; Bing Zhang ; Jin-Yue Gao
- 关键词：Hole-burnings ; Bichromatic laser field ; Optical information processes
- 刊名：Optics Communications
- 出版年：2008
- 期刊代码：50_00304018
- 类别：ph
- 出版时间：1 June 2008
- 卷：281
- 期：11
- 页码：3137-3142
- 文件大小：214 K
摘要
In a Doppler-broadened three-level Λ-type system driven simultaneously by a coupling laser and two equal-amplitude saturating laser fields with a frequency difference 2δ, the absorption spectrum of a weak probe laser exhibits multiple deep spectral holes through coherent hole-burning CHB with controllable numbers, widths, depths, and positions. More significant, changing δ or lasers directions, CHBs can degenerate into narrower and deeper spectral holes where the slope of the refractive index is very steep. The multiple narrow spectral holes in a single absorption profile are expected to have potential applications in high density storage, optical information processes, and slow-light.