Strengthening electron-triggered light emission


The way in which electrons interact with photons of sunshine is a key a part of many modern technologies, from lasers to solar panels to LEDs. However the interaction is inherently a weak one due to a significant mismatch in scale: A wavelength of visible light is about 1,000 times larger than an electron, so the way in which the 2 things affect one another is restricted by that disparity.

Now, researchers at MIT and elsewhere have provide you with an progressive method to make much stronger interactions between photons and electrons possible, in the method producing a hundredfold increase within the emission of sunshine from a phenomenon called Smith-Purcell radiation. The finding has potential implications for each industrial applications and fundamental scientific research, although it’ll require more years of research to make it practical.

The findings are reported today within the journal , in a paper by MIT postdocs Yi Yang (now an assistant professor on the University of Hong Kong) and Charles Roques-Carmes, MIT professors Marin Soljačić and John Joannopoulos, and five others at MIT, Harvard University, and Technion-Israel Institute of Technology.

In a mix of computer simulations and laboratory experiments, the team found that using a beam of electrons together with a specially designed photonic crystal — a slab of silicon on an insulator, etched with an array of nanometer-scale holes — they might theoretically predict stronger emission by many orders of magnitude than would ordinarily be possible in conventional Smith-Purcell radiation. Additionally they experimentally recorded a one hundredfold increase in radiation of their proof-of-concept measurements.

Unlike other approaches to producing sources of sunshine or other electromagnetic radiation, the free-electron-based method is fully tunable — it could produce emissions of any desired wavelength, just by adjusting the scale of the photonic structure and the speed of the electrons. This may occasionally make it especially useful for making sources of emission at wavelengths which can be difficult to supply efficiently, including terahertz waves, ultraviolet light, and X-rays.

The team has to this point demonstrated the hundredfold enhancement in emission using a repurposed electron microscope to operate as an electron beam source. But they are saying that the essential principle involved could potentially enable far greater enhancements using devices specifically adapted for this function.

The approach is predicated on an idea called flatbands, which have been widely explored lately for condensed matter physics and photonics but have never been applied to affecting the essential interaction of photons and free electrons. The underlying principle involves the transfer of momentum from the electron to a bunch of photons, or vice versa. Whereas conventional light-electron interactions depend on producing light at a single angle, the photonic crystal is tuned in such a way that it enables the production of an entire range of angles.

The identical process is also utilized in the wrong way, using resonant light waves to propel electrons, increasing their velocity in a way that would potentially be harnessed to construct miniaturized particle accelerators on a chip. These might ultimately give you the option to perform some functions that currently require giant underground tunnels, equivalent to the 30-kilometer-wide Large Hadron Collider in Switzerland.

“In case you could actually construct electron accelerators on a chip,” Soljačić says, “you might make rather more compact accelerators for a number of the applications of interest, which might still produce very energetic electrons. That obviously could be huge. For a lot of applications, you wouldn’t should construct these huge facilities.”

The brand new system could also potentially provide a highly controllable X-ray beam for radiotherapy purposes, Roques-Carmes says.

And the system may very well be used to generate multiple entangled photons, a quantum effect that may very well be useful within the creation of quantum-based computational and communications systems, the researchers say. “You should use electrons to couple many photons together, which is a considerably hard problem if using a purely optical approach,” says Yang. “That’s one of the vital exciting future directions of our work.”

Much work stays to translate these latest findings into practical devices, Soljačić cautions. It could take some years to develop the obligatory interfaces between the optical and electronic components and easy methods to connect them on a single chip, and to develop the obligatory on-chip electron source producing a continuous wavefront, amongst other challenges.

“The explanation that is exciting,” Roques-Carmes adds, “is because this is sort of a special kind of source.” While most technologies for generating light are restricted to very specific ranges of color or wavelength, and “it’s normally difficult to maneuver that emission frequency. Here it’s completely tunable. Just by changing the rate of the electrons, you’ll be able to change the emission frequency. … That excites us in regards to the potential of those sources. Because they’re different, they provide latest sorts of opportunities.”

But, Soljačić concludes, “to ensure that them to grow to be truly competitive with other sorts of sources, I feel it’ll require some more years of research. I might say that with some serious effort, in two to 5 years they could start competing in no less than some areas of radiation.”

The research team also included Steven Kooi at MIT’s Institute for Soldier Nanotechnologies, Haoning Tang and Eric Mazur at Harvard University, Justin Beroz at MIT, and Ido Kaminer at Technion-Israel Institute of Technology. The work was supported by the U.S. Army Research Office through the Institute for Soldier Nanotechnologies, the U.S. Air Force Office of Scientific Research, and the U.S. Office of Naval Research.


What are your thoughts on this topic?
Let us know in the comments below.


Notify of
1 Comment
Newest Most Voted
Inline Feedbacks
View all comments
is a safe exchange
is a safe exchange
8 months ago

Reading your article helped me a lot and I agree with you. But I still have some doubts, can you clarify for me? I’ll keep an eye out for your answers.

Share this article

Recent posts

Conversational AI revolutionizes the shopper experience landscape

I feel the identical applies after we discuss either agents or employees or supervisors. They do not necessarily wish to be alt-tabbing or...

Former Twitter engineers are constructing Particle, an AI-powered news reader

A team led by former Twitter engineers is rethinking how AI may be used to assist people process news and data., which entered...

China, shocked by the looks of 'Sora'… “China is only a 'fine-tuned version' of the USA”

China showed a shocked response to OpenAI's video-generating artificial intelligence (AI) 'Sora'. There's concern that the technology gap has widened to the purpose...

What’s Multitenancy in Vector Databases?

While you upload and manage your data on GitHub that nobody else can see unless you make it public, you share physical infrastructure with...

Synapsoft launches Synap document viewer on ‘GPT Store’

Synapsoft (CEO Jeon Kyeong-heon), a specialist in artificial intelligence (AI) digital document software as a service (SaaS), announced on the twenty second that it...

Recent comments

skapa binance-konto on LLMs and the Emerging ML Tech Stack
бнанс рестраця для США on Model Evaluation in Time Series Forecasting
Bonus Pendaftaran Binance on Meet Our Fleet
Créer un compte gratuit on About Me — How I give AI artists a hand
To tài khon binance on China completely blocks ‘Chat GPT’
Regístrese para obtener 100 USDT on Reducing bias and improving safety in DALL·E 2
crystal teeth whitening on What babies can teach AI
binance referral bonus on DALL·E API now available in public beta prihlásení on Neural Networks and Life
Büyü Yapılmışsa Nasıl Bozulur on Introduction to PyTorch: from training loop to prediction
yıldızname on OpenAI Function Calling
Kısmet Bağlılığını Çözmek İçin Dua on Examining Flights within the U.S. with AWS and Power BI
Kısmet Bağlılığını Çözmek İçin Dua on How Meta’s AI Generates Music Based on a Reference Melody
Kısmet Bağlılığını Çözmek İçin Dua on ‘이루다’의 스캐터랩, 기업용 AI 시장에 도전장
uçak oyunu bahis on Thanks!
para kazandıran uçak oyunu on Make Machine Learning Work for You
medyum on Teaching with AI
aviator oyunu oyna on Machine Learning for Beginners !
yıldızname on Final DXA-nation
adet kanı büyüsü on ‘Fake ChatGPT’ app on the App Store
Eşini Eve Bağlamak İçin Dua on LLMs and the Emerging ML Tech Stack
aviator oyunu oyna on AI as Artist’s Augmentation
Büyü Yapılmışsa Nasıl Bozulur on Some Guy Is Trying To Turn $100 Into $100,000 With ChatGPT
Eşini Eve Bağlamak İçin Dua on Latest embedding models and API updates
Kısmet Bağlılığını Çözmek İçin Dua on Jorge Torres, Co-founder & CEO of MindsDB – Interview Series
gideni geri getiren büyü on Joining the battle against health care bias
uçak oyunu bahis on A faster method to teach a robot
uçak oyunu bahis on Introducing the GPT Store
para kazandıran uçak oyunu on Upgrading AI-powered travel products to first-class
para kazandıran uçak oyunu on 10 Best AI Scheduling Assistants (September 2023)
aviator oyunu oyna on 🤗Hugging Face Transformers Agent
Kısmet Bağlılığını Çözmek İçin Dua on Time Series Prediction with Transformers
para kazandıran uçak oyunu on How China is regulating robotaxis
bağlanma büyüsü on MLflow on Cloud
para kazandıran uçak oyunu on Can The 2024 US Elections Leverage Generative AI?
Canbar Büyüsü on The reverse imitation game
bağlanma büyüsü on The NYU AI School Returns Summer 2023
para kazandıran uçak oyunu on Beyond ChatGPT; AI Agent: A Recent World of Staff
Büyü Yapılmışsa Nasıl Bozulur on The Murky World of AI and Copyright
gideni geri getiren büyü on ‘Midjourney 5.2’ creates magical images
Büyü Yapılmışsa Nasıl Bozulur on Microsoft launches the brand new Bing, with ChatGPT inbuilt
gideni geri getiren büyü on MemCon 2023: We’ll Be There — Will You?
adet kanı büyüsü on Meet the Fellow: Umang Bhatt
aviator oyunu oyna on Meet the Fellow: Umang Bhatt
abrir uma conta na binance on The reverse imitation game
código de indicac~ao binance on Neural Networks and Life
Larry Devin Vaughn Wall on How China is regulating robotaxis
Jon Aron Devon Bond on How China is regulating robotaxis
otvorenie úctu na binance on Evolution of Blockchain by DLC
puravive reviews consumer reports on AI-Driven Platform Could Streamline Drug Development
puravive reviews consumer reports on How OpenAI is approaching 2024 worldwide elections Registrácia on DALL·E now available in beta