| 查看: 112 | 回复: 1 | |||
| 当前主题已经存档。 | |||
westwolf木虫 (著名写手)
|
[交流]
The strange world of self-induced transparency and light bullets
|
||
|
The remarkable phenomena of self-induced transparency and solitons will be studied in a new project supported by a grant of £397K from EPSRC. This joint theoretical and experimental project, involving scientists from the Advanced Technology Institute at the University of Surrey along with colleagues in the UK, France, and the USA, will study fundamental quantum coherent phenomena which may one day have applications in optical information processing. The passage of very bright, very short light pulses through an optical material shows many interesting and useful effects. Normally, the pulse would spread out in space and time as a result of diffraction and dispersion. However when the pulse is very bright, nonlinear effects can exactly cancel this spreading, and the light pulse propagates without any change in shape: a 'soliton' or 'light bullet'. It is easier to form solitons when the light is confined to a small cavity, and 'cavity solitons' are now attracting interest as a way of storing and manipulating data for optical storage or optical computing. Another effect, seen when the pulse duration is very short, is self-induced transparency (SIT), in which the material which normally absorbs light becomes completely transparent to a bright, short-duration light pulse. This research project is based on theoretical predictions by one of the co-investigators, Dr. Gabriella Slavcheva. Using a new theory of nonlinear coherent pulse dynamics based on Richard Feynman's model of atoms in an electromagnetic field, Dr. Slavcheva predicted the existence of cavity solitons formed as a result of self-induced transparency. With the help of collaborators from the École Normale Supérieure in Paris, and the University of Arizona, the scientists from the ATI will employ both theory and experiment to demonstrate the existence of this new type of soliton and to investigate the potential for applications in information technology and communications. Source: University of Surrey |
回复此楼» 猜你喜欢
售SCI-T0P文章，我:8O.5.5.1.O.54,科目齐全,可+急
已经有3人回复
-
今天基金会出结果吗？20260819
已经有13人回复
-
售SCI一区T0P文章，我:8O.55.1.O.5.4,科目齐全,可+急
已经有4人回复
-
售SCI一区T0P文章，我:8.O55.1.O.54,科目全,可十急
已经有4人回复
-
售SCI文章，我:8O.5.5.1O.54,科目全,可十急
已经有5人回复
-
售SCI文章，我:8O5.5.1.O.54,科目齐全,可+急
已经有4人回复
-
时间戳变了，能看出什么问题？
已经有16人回复
-
filecode，4个jtjc了
已经有13人回复
-
欢迎发来filecode的Mz6后的代码验证其规律
已经有121人回复
-
为什么余额宝的年化利率越来越低？主要原因有哪些？
已经有5人回复
1
 |
2楼2006-07-19 02:08:17
