Home  |  News  |  Photo  |  Video   |  Travel  |  Learn Chinese  |  Opinions  |  EZFM  |  NEWS Plus  |  CHINA PLUS
China develops world's brightest EUV free electron laser
   2017-01-15 21:04:52    Xinhua      Web Editor: Zhang Shuai

Scientists adjust the facility that can generate 140 trillion photons per laser pulse in one picosecond in Dalian, northeast China's Liaoning Province, January 13, 2016. [Photo: Xinhua]

Chinese scientists announced they have built a facility that can generate the world's brightest extreme ultraviolet (EUV) free electron laser.

The facility in Dalian, a coastal city in northeast China's Liaoning Province, can generate 140 trillion photons per laser pulse in one picosecond.

The Dalian Coherent Light Source (DCLS) facility was jointly built by the Dalian Institute of Chemical Physics and Shanghai Institute of Applied Physics under the Chinese Academy of Sciences (CAS) with a total investment of about 140 million yuan (about 20 million U.S. dollars).

The flashes of light will illuminate new aspects of the microscopic world. "EUV light sources are especially useful for sensitive detection of atoms, molecules and clusters," said Yang Xueming, a CAS academician and deputy director of the Dalian Institute of Chemical Physics.

Brightness and pulse duration of the light source are key to such detection. "The brighter the light source, the more clearly we can see the small number of atoms or molecules," said Yang.

"Since many physical, chemical and biological reactions happen on a time scale of femtoseconds or picoseconds, we need high-speed 'flashlight' to capture those moments to study the process," Yang said.

The DCLS will play a unique and important role in exploring the unknown material world and promoting technological progress, said Yang.

"EUV free electron laser light sources have wide applications in the study of basic energy science, chemistry, physics and atmospheric sciences. We expect that the facility will become a new tool for important scientific discoveries and international scientific collaboration," Yang said.

Among all the applications, research on the formation and growth mechanism of smog is likely to gain the most attention in China.

"The facility can help us study how small molecules grow into clusters, and then into smog. Better understanding the formation mechanism of smog is important to finding solutions to air pollution," the scientist said.

Zhang Weiqing, a researcher with the Dalian Institute of Chemical Physics, said the DCLS will also be used to study the chemical mechanism of burning, which will help improve the efficiency of energy utilization and reduce pollution emissions.

The facility is also expected to play an important role in developing the next generation of semiconductor chips, as well as investigating the structure and function of biomolecules, said Zhang.

Wang Enge, vice president of the CAS, said 90 percent of DCLS devices were independently developed in China, and its construction has laid the foundation for developing next generation free electron laser. 



CRIENGLISH.com claims the copyright of all material and information produced originally by our staff. No person, organization and/or company shall reproduce, disseminate or broadcast the content in any manner whatsoever without the express written permission of CRIENGLISH.com.

CRIENGLISH.com holds neither liability nor responsibility for materials attributed to any other source. Such information is provided as reportage and dissemination of information but does not necessarily reflect the opinion of or endorsement by CRI.

The Sound Stage
China Revealed
My Chinese Life
Photo Gallery
Learn Chinese
"In" Chinese
Chatting in Chinese
Pop Culture
Traditional Culture
Living Chinese
Chinese Studio
Chinese Class
Learn English
Special English
Pop Chart
Everyday English
Fabulous Snaps
CRI News
China.org.cn  | Xinhua  | People's Daily Online   |  CNTV.cn  | China Daily  |  Global Times  | China Job  |  China Tibet Online  | Taiwan.cn  | eBeijing  | Beijing Today  | China-Eurasia Expo  | APEC Yiwu Conference  | Chinese Embassy in S.Africa  | Chinese Embassy in Australia  | Chinese Embassy in NZ