Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The strange world of self-induced transparency and light bullets

27.06.2006
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.

“Soliton Formation through Self-Induced Transparency in Semiconductor Microcavities”, Professor Ortwin Hess, Professor Jeremy Allam & Dr. Gabriela Slavcheva (EPSRC grant EP/D060958/1)

Stuart Miller | alfa
Further information:
http://www.surrey.ac.uk

More articles from Physics and Astronomy:

nachricht From rocks in Colorado, evidence of a 'chaotic solar system'
23.02.2017 | University of Wisconsin-Madison

nachricht Prediction: More gas-giants will be found orbiting Sun-like stars
22.02.2017 | Carnegie Institution for Science

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>