Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says Illia Thiele, a theoretical physicist at Chalmers University of Technology.
Ultra-intense light pulses, consisting of a single wave period, can be described as a tsunami of light. So far, such strong and short light pulses have never been observed. Now, researchers from Chalmers University of Technology and the University of Gothenburg, Sweden, propose a theoretical setup for creating the much-anticipated strong waves. The light pulses can be used to study interactions between matter and light in a new way.
Credit: Yen Strandqvist/Illia Thiele/Chalmers University of Technology
Together with Dr Evangelos Siminos at the University of Gothenburg, and Tünde Fülöp, Professor of Physics at Chalmers, Illia Thiele now presents a theoretical method for creating the fastest possible single wave motion. This kind of radiation has never yet been observed in the universe or even the lab.
The radiation source is interesting for understanding the properties of different materials. Since it offers an ultra-fast switching of light matter interactions, it can be useful in material science, or sensor related research, for example. Moreover, it can be used as a driver for other types of radiation, and to push the limits of how short a light pulse could be.
"An ultra-intense pulse is like a great tsunami of light. The wave can pull an electron out of an atom, accelerating it to almost the speed of light, creating exotic quantum states. This is the fastest and strongest switch possible, and it paves the way for advances in fundamental research," says Dr Illia Thiele.
The new pulses can be used to probe and control matter in unique ways. While other light pulses, with multiple wave periods, impose changes in the material properties gradually, pulses with a single strong wave period cause sudden and unexpected reactions.
Researchers worldwide have tried to create this source of radiation, since it is of high interest for the scientific communities within physics and material science.
"Now, we hope to be able to bring our theoretical setup to the lab. Our method could help close the existing gaps in the scientific landscape of light sources," says Tünde Fülöp.
Read the scientific paper Electron beam driven generation of frequency-tunable isolated relativistic sub-cycle pulses in Physical Review Letters.
A more detailed explanation of the new method to create ultra-intense light pulses
The researchers propose a method for the generation of ultra-intense light pulses containing less than a single oscillation of the electromagnetic field. These so-called sub-cycle pulses can be used to probe and control matter in unique ways. Conventional methods can only produce sub-cycle pulses of limited field strength: above a certain threshold the amplifying medium would be ionized by the intense fields.
The researchers propose to use an electron beam in a plasma, which is not subject to a damage threshold, as an amplifying medium for a seed electromagnetic pulse. To ensure that energy is transferred from the electron beam to the pulse in such a way that a sub-cycle pulse is produced, the beam needs to be introduced at an appropriate phase of the oscillation of the electromagnetic field.
This can be achieved by using a mirror to reflect the seed pulse while the electron beam is being injected. This scenario leads to significant amplification of the seed pulse and the formation of an intense, isolated, sub-cycle pulse. Readily available terahertz seed pulses and electron bunches from laser-plasma accelerators could generate mid-infrared sub-cycle pulses with millijoule-level energies, which are highly desirable as probes of matter but not possible to produce with conventional sources.
For more information, contact:
Illia Thiele, Postdoctoral researcher, Department of Physics, Chalmers University of Technology, +46 76 607 82 79, email@example.com
Tünde Fülöp, Professor, Department of Physics, Chalmers University of Technology, +46 72 986 74 40, firstname.lastname@example.org
Evangelos Siminos, Assistant Professor, Department of Physics, University of Gothenburg, +46 31 786 9161, email@example.com
Joshua Worth | EurekAlert!
Convenient location of a near-threshold proton-emitting resonance in 11B
29.05.2020 | The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
A special elemental magic
28.05.2020 | Kyoto University
In living cells, enzymes drive biochemical metabolic processes enabling reactions to take place efficiently. It is this very ability which allows them to be used as catalysts in biotechnology, for example to create chemical products such as pharmaceutics. Researchers now identified an enzyme that, when illuminated with blue light, becomes catalytically active and initiates a reaction that was previously unknown in enzymatics. The study was published in "Nature Communications".
Enzymes: they are the central drivers for biochemical metabolic processes in every living cell, enabling reactions to take place efficiently. It is this very...
Early detection of tumors is extremely important in treating cancer. A new technique developed by researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from normal tissue. The work is published May 25 in the journal Nature Nanotechnology.
researchers at the University of California, Davis offers a significant advance in using magnetic resonance imaging to pick out even very small tumors from...
Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.
When microelectronic systems are used for medical applications, they have to meet high requirements in terms of biocompatibility, reliability, energy...
Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.
Ultrathin materials are extremely interesting as building blocks for next generation nano electronic devices, as it is much easier to make circuits and other...
Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.
A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...
19.05.2020 | Event News
07.04.2020 | Event News
06.04.2020 | Event News
29.05.2020 | Materials Sciences
29.05.2020 | Materials Sciences
29.05.2020 | Power and Electrical Engineering