Attosecond pulses measure ultrafast photoionization processes

April 12, 2012
Daejeon, Korea--Researchers at KAIST successfully measured the exact status of the rapidly changing helium atom using an attosecond pulse.  

Daejeon, Korea--Researchers at the Korea Advanced Institute of Science and Technology (KAIST)successfully measured the exact status of the rapidly changing Helium atom using an attosecond pulse, making possible the precise measurement of many ultrafast phenomena in nature.

Professor Nam Chang Hee led the research team and PhD Kim Kyung Taek and professor Choi Nak Ryul also participated in the research. Conducted under the support of the Researcher Support Program initiated by The Ministry of Education and Science and Korea Research Foundation, the research result was published in Physical Review Letters on March 2.

Nam Chang Hee's research team used attosecond X-ray pulses and femtosecond laser pulse to photoionize helium atoms, and measure the wave speed of the produced electron to closely investigate the ultrafast photoionization process. The researchers say they have succeeded in producing the shortest 60 attosecond pulse in the world using high-harmonic waves.

Hee said, "This research precisely measured the exact status of rapidly changing Helium atoms. I am planning to research on measuring the ultrafast phenomena inside atoms and molecules and controlling the status of the atoms and molecules based on the research result."

SOURCE: KAIST; www.kaist.edu/edu.html

Sponsored Recommendations

Request a free Micro 3D Printed sample part

April 11, 2024
The best way to understand the part quality we can achieve is by seeing it first-hand. Request a free 3D printed high-precision sample part.

How to Tune Servo Systems: The Basics

April 10, 2024
Learn how to tune a servo system using frequency-based tools to meet system specifications by watching our webinar!

Motion Scan and Data Collection Methods for Electro-Optic System Testing

April 10, 2024
Learn how different scanning patterns and approaches can be used in measuring an electro-optic sensor performance, by reading our whitepaper here!

How Precision Motion Systems are Shaping the Future of Semiconductor Manufacturing

March 28, 2024
This article highlights the pivotal role precision motion systems play in supporting the latest semiconductor manufacturing trends.

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!