A team of scientists optimized the interaction of light and glass in a way that facilitates its possible future usage for light wave driven electronics.
Light waves might be able to drive future transistors. The electromagnetic waves of light oscillate approximately one million times in a billionth of a second, hence with petahertz frequencies. In principle also future electronics could reach this speed and become 100.000 times faster than current digital electronics. This requires a better understanding of the sub-atomic electron motion induced by the ultrafast electric field of light. Now a team of the Laboratory for Attosecond Physics (LAP) at the Max-Planck Institute of Quantum Optics (MPQ) and the Ludwig-Maximilians-Universität (LMU) and theorists from the University of Tsukuba combined novel experimental and theoretical techniques which provide direct access to this motion for the first time.
Electron movements form the basis of electronics as they facilitate the storage, processing and transfer of information. State-of-the-art electronic circuits have reached their maximum clock rates at some billion switching cycles per second as they are limited by the heat accumulating in the process of switching power on and off.
The electric field of light changes its direction a trillion times per second and is able to move electrons in solids at this speed. This means that light waves can form the basis for future electronic switching if the induced electron motion and its influence on heat accumulation is precisely understood. Physicists from the Laboratory for Attosecond Physics at the MPQ and the LMU already found out that it is possible to manipulate the electronic properties of matter at optical frequencies (Nature, doi: 10.1038/nature11567, Nature, doi: 10.1038/nature11720, both published 5.Dezember 2012).
In a follow-up experiment the researchers now, in a similar way as in their previous approach, shot extremely strong, few femtosecond- laser pulses (one femtosecond is a millionth part of a second) onto glass (silicon dioxide). The light pulse only includes one single strong oscillation cycle of the field, hence the electrons are moved left and right only once. The full temporal characterization of the light field after transmission through the thin glass plate now for the first time provides direct insight into the attosecond electron dynamics, induced by the light pulse in the solid.
This measurement technique reveals that electrons react with a delay of only some ten attoseconds (one attosecond is a billionth of a billionth of a second) to the incoming light. This time-delay in the reaction determines the energy transferred between light and matter. Since it is possible to measure this energy exchange within one light cycle for the first time the parameters of the light matter interaction can be understood and optimized for ultimate fast signal processing. The more reversible the exchange is and the smaller the amount of energy which is left behind in the medium after the light pulse is gone, the better the interaction is suitable for future light field-driven electronics.
To understand the observed phenomena and identify the best set of experimental parameters to that end, the experiments were backed up by a novel simulation method based on first principles developed at the Center for Computational Sciences at University of Tsukuba. The theorists there used the K computer, currently the 4-th fastest supercomputer in the world to compute the electron movement inside solids with unprecedented accuracy.
The researchers succeeded in optimizing the energy consumption by adapting the amplitude of the light field. At certain field strengths energy is transferred from the field to the solid during the first half of the pulse cycle and is almost completely emitted back in the second half of the light. These findings verify that a potential switching medium for future light-driven electronics would not overheat. The ’cool relationship’ between glass and light might provide an opportunity to dramatically accelerate electronic signal- and data processing, up to its ultimate frontiers. Thorsten Naeser
Learn more: A switch for light wave electronics
The Latest on: Light wave electronics
via Google News
The Latest on: Light wave electronics
- LG joins tailorable home appliance market with Objet Collectionon October 22, 2020 at 12:59 am
LG Electronics on Thursday announced a new lineup of tailorable home appliances under the brand Objet, joining the growing market for customizable consumer electronics. The company unveiled 11 new ...
- LG Microwaveson October 21, 2020 at 5:00 pm
LG is an electronics company that offers a variety ... microwave or bake/roast with a convection heat. Lightwave technology: This special element creates food that is crispy on the outside and ...
- Lightwave Logic Announces Optimization of Advanced Ultra-High-Speed Polymer with Unparalleled Photostabilityon October 21, 2020 at 5:33 am
ENGLEWOOD, Colo., Oct. 21, 2020 /PRNewswire/ -- Lightwave Logic, Inc. (OTCQB: LWLG), a technology platform company leveraging its proprietary electro-optic polymers to transmit data at higher ...
- Samsung Electronics asserts that it has developed a new industry-leading Blue QLED technologyon October 21, 2020 at 5:19 am
Now, for the unware, Quantum Dots are nanoparticles that manufacturers are adding to the layers(sandwiches) of films, filters, glass, and electronics that make up a display. Ranging between two to ten ...
- New Method to Measure Temporal Electric Field Evolution of Ultrashort Laser Pulseson October 19, 2020 at 6:37 am
Researchers at the University of Ottawa have developed a new technique to quantify the temporal evolution of electric fields with optical frequencies.
- Trumpf sees light at the end of the tunnelon October 18, 2020 at 7:46 am
As a result, EUV contributed almost as much to Group sales as Trumpf's entire US subsidiary. Electronics, which is located in Freiburg at TRUMPF Hüttinger and in Warsaw, again exceeded expectations ...
- uOttawa researchers find cheaper, faster way to measure the electric field of lighton October 16, 2020 at 7:37 am
which facilitates a much simpler and faster measurement of a light wave oscillation ... the development of a next generation petahertz electronics." How was this research conducted?
- KP Performance Antennas Releases a New Series of Single-Port Omnidirectional WiFi Antennason October 15, 2020 at 7:38 am
IRVINE, Calif., Oct. 15, 2020 /PRNewswire/ -- KP Performance Antennas, an Infinite Electronics brand and a manufacturer of wireless network antennas, just launched a new line of medium to high ...
- Lightwave Logic Announces its Proprietary Polymer Technology Compatible with Standard Integrated Photonics Platformson October 15, 2020 at 5:32 am
ENGLEWOOD, Colo., Oct. 15, 2020 /PRNewswire/ -- Lightwave Logic, Inc. (OTCQB: LWLG), a technology platform company leveraging its proprietary electro-optic polymers to transmit data at higher ...
via Bing News