Current location:Stellar Series news portal > style
Chinese scientists invent ultrathin optical crystal for next
Stellar Series news portal2024-05-21 18:24:59【style】7People have gathered around
Introduction(Xinhua) 10:05, December 20, 2023This photo taken on Dec. 15, 2023 shows a Twist Boron Nitride (TBN)
This photo taken on Dec. 15, 2023 shows a Twist Boron Nitride (TBN) crystal placed on a piece of fused silica in Peking University, Beijing, capital of China. A team of Chinese researchers used a novel theory to invent a new type of ultrathin optical crystal with high energy efficiency, laying the foundation for next-generation laser technology. (Xinhua/Wei Mengjia)
BEIJING, Dec. 19 (Xinhua) -- A team of Chinese researchers used a novel theory to invent a new type of ultrathin optical crystal with high energy efficiency, laying the foundation for next-generation laser technology.
Prof. Wang Enge from the School of Physics, Peking University, recently told Xinhua that the Twist Boron Nitride (TBN) made by the team, with a micron-level thickness, is the thinnest optical crystal currently known in the world. Compared with traditional crystals of the same thickness, its energy efficiency is raised by 100 to 10,000 times.
Wang, also an academician of the Chinese Academy of Sciences, said this achievement is an original innovation by China in the theory of optical crystals, and has created a new field of making optical crystals with two-dimensional thin-film materials of light elements.
The research findings were recently published in the journal Physical Review Letters.
Laser is one of the underlying technologies of the information society. Optical crystals can realize the functions of frequency conversion, parametric amplification and signal modulation, to name a few, and are the key parts of laser devices.
In the past 60 years, the research and development of optical crystals has been mainly guided by two phase-matching theories proposed by scientists in the United States.
However, due to the limitations of traditional theory models and material systems, the existing crystals have struggled to meet the future requirements for developing laser devices, such as miniaturization, high integration and functionalization. The development of new-generation laser technology needs breakthroughs in optical crystal theory and materials.
Wang Enge and Prof. Liu Kaihui, director of the Institute of Condensed Matter and Material Physics, School of Physics, Peking University, led the team to develop the twist-phase-matching theory, the third phase-matching theory based on the light-element material system.
"The laser generated by optical crystals can be viewed as a marching column of individuals. The twist mechanism can make everyone's direction and pace highly coordinated, greatly improving the energy conversion efficiency of the laser," explained Liu, who is also deputy director of the Interdisciplinary Institute of Light-Element Quantum Materials at the Beijing Huairou National Comprehensive Science Center.
The research has opened up a brand-new design model and material system, and realized the original innovation of the whole chain from basic optics theory to material science and technology, he said.
"The TBN crystal's thickness ranges from 1 to 10 microns. The thickness of optical crystals we had known before is mostly at the level of a millimeter or even centimeter," Liu added.
The TBN production technology is now applying for patents in the United States, Britain, Japan and other countries. The team has made a TBN laser prototype and is developing new-generation laser technology with enterprises.
"Optical crystal is the cornerstone of laser technology development, and the future of laser technology is determined by the design theory and production technology of optical crystals," Wang said.
With ultra-thin size, excellent integration potential and new functions, the TBN crystal is expected to achieve new application breakthroughs in quantum light sources, photonic chips, artificial intelligence and other fields in the future, according to Wang.
Researchers use equipment to prepare optical crystal and test wavelength conversion at a lab in Peking University, Beijing, capital of China, Dec. 15, 2023. A team of Chinese researchers used a novel theory to invent a new type of ultrathin optical crystal with high energy efficiency, laying the foundation for next-generation laser technology. (Xinhua/Wei Mengjia)
Liu Kaihui (front), director of the Institute of Condensed Matter and Material Physics, School of Physics, Peking University, and other members of a research team pose for a group photo in Peking University, Beijing, capital of China, Dec. 15, 2023. A team of Chinese researchers used a novel theory to invent a new type of ultrathin optical crystal with high energy efficiency, laying the foundation for next-generation laser technology. (Xinhua/Wei Mengjia)
Address of this article:http://elsalvador.claboston.org/news-05c799943.html
Very good!(662)
Related articles
- I was 'brokefished' by my friend for £400
- Chinese researchers unravel high
- Maldives to allow settling import payments using Chinese currency
- Maldives to allow settling import payments using Chinese currency
- What a blast to work at NASA. Space agency is sky
- GM China joint venture sees soaring vehicle export in Q1
- China sees fewer production safety accidents in Q1
- China works to promote energy conservation, carbon reduction in construction industry
- Verona confirms Serie A status for another year after beating Salernitana
- Hong Kong fast
Popular articles
Recommended
Who is Jacob Zuma, the former South African president disqualified from next week's election?
Protection of consumers' personal information highlighted in China's new regulations
China to launch awareness campaign on national security laws
Bazaar train boosts incomes for residents in Xinjiang, NW China
Kevin Pillar gets 1,000th career hit in Angels' win at Texas
Commentary: What is behind the China shock concoction
Desert county in NW China's Xinjiang experiences bountiful cistanche harvest
China to launch awareness campaign on national security laws
Links
- Julia Fox and Law Roach team up for a sustainable fashion competition show
- Now Take That fans are left fuming after venue change from crisis
- Russian journalist arrested for years
- Analysis: Lando Norris win shows McLaren is ready to return to global motorsports prominence
- Can yogurt reduce the risk of Type 2 diabetes?
- Chicago Sky rookie Kamilla Cardoso out at least a month with a shoulder injury
- Putin is starting his 5th term as president, more in control of Russia than ever
- Giants rookie Mason Black makes MLB debut in Philadelphia against childhood favorite Phillies
- Biden bows to pressure from anti
- Nonprofit Chicago production house Invisible Institute wins 2 Pulitzer Prizes