Attosecond pulses measure ultrafast photoionization processes

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

Most Popular Articles

Webcasts

Ray Optics Simulations with COMSOL Multiphysics

The Ray Optics Module can be used to simulate electromagnetic wave propagation when the wavelength is much smaller than the smallest geometric entity in the ...

Multichannel Spectroscopy: Technology and Applications

This webcast, sponsored by Hamamatsu, highlights some of the photonic technology used in spectroscopy, and the resulting applications.

Handheld Spectrometers

Spectroscopy is a powerful and versatile tool that traditionally often required a large and bulky instrument. The combination of compact optics and modern pa...

Opportunities in the Mid-IR

The technology for exploiting the mid-IR is developing rapidly:  it includes quantum-cascade lasers and other sources, spectroscopic instruments of many...
White Papers

Accurate LED Source Modeling Using TracePro

Modern optical modeling programs allow product design engineers to create, analyze, and optimize ...

Miniature Spectrometers for Narrowband Laser Characterization

In less than 60 years, lasers have transformed from the imagined “ray gun” of science fiction int...

Improve Laser Diode Performance by Reducing Output Cable Inductance using Twisted Pair Cable

The intent of this article is to provide information regarding the performance of twisted pair ca...
Technical Digests

REMOTE FIBER-OPTIC SENSING: Data in abundance from difficult environments

The use of optical fibers to measure strain, temperature, and other parameters at desired points ...

SCANNERS FOR MATERIALS PROCESSING: Serving demanding applications

Galvanometer-based scanners are an essential component in laser-based materials-processing system...

OPTICAL COATINGS: Evolving technology produces new benefits

The antireflection, high-reflection, and/or spectral characteristics provided by optical coatings...

FREEFORM OPTICS: Top-notch capabilities lead to expanded possibilities

The use of free-form aspherical surfaces in an optical system can give it abilities impossible to...

Click here to have your products listed in the Laser Focus World Buyers Guide.

PRESS RELEASES

SCHOTT and Applied Microarrays Establish Distribution Partnership for NEXTERION® Products

01/22/2013 SCHOTT and Applied Microarrays, Inc. have established a partnership for the distribution of SCHOT...

SCHOTT North America and Space Photonics, Inc. Sign Exclusive Licensing Agreement for Covert Communications Technology

01/22/2013 WASHINGTON, D.C.—October 18, 2012—Space Photonics Inc. and SCHOTT North America, Inc. today annou...
Social Activity
  •  
  •  
  •  
  •  
Copyright © 2007-2015. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS