Featured Research

from universities, journals, and other organizations

New tool to investigate the chemistry of nature: Laser-based tabletop setup generates ultrashort XUV light pulses

Date:
April 30, 2014
Source:
Helmholtz-Zentrum Berlin für Materialien und Energie
Summary:
Scientists have built a laser-based tabletop setup which generates ultrashort XUV light pulses and achieves their monochromatization by implementing special reflection zone plates. Liquid phases are a natural environment for many interesting processes in chemistry and biology, and short light pulses allow insights into electronic and structural dynamics of molecules and molecular complexes.

Schematic picture for the high harmonic generation (HHG) light source (upper part) with zooming into the region of interaction with the liquid-phase sample (lower part).
Credit: HZB/FU

The Aziz' team at the Joint Laboratory between Freie Universität Berlin and HZB has built a laser-based tabletop setup which generates ultrashort XUV light pulses and achieves their monochromatization by implementing special reflection zone plates, developed and produced by the team of Alexei Erko.

HZB-scientist Emad Aziz, who leads the Joint lab between HZB and Freie Universität Berlin, has developed and installed a new tool to investigate ultrafast dynamics in solutions and at interfaces with the use of ultrashort laser pulses. Liquid phases are a natural environment for many interesting processes in chemistry and biology, and short light pulses allow insights into electronic and structural dynamics of molecules and molecular complexes. In particular, photoelectron spectroscopy with extreme ultraviolet (XUV) radiation is a powerful method to probe the electron density in a valence shell of a molecular system. In combination with a pump-probe technique, this method enables to reveal mechanisms of molecular processes, which typically occur on the subpicosecond or femtosecond time scale.

Now Aziz and his team have built a new laser-based tabletop setup which generates XUV light pulses with a duration of 45 femtoseconds. To select specific wavelengths, they implemented special reflection zone plates, developed and fabricated in the HZB-Institute for Nanometre Optics and Technology headed by Alexei Erko. These reflection zone plates achieve monochromatization with extremely high efficiency and minimum temporal pulse distortion.

"In building up this new table-top device and testing it, Jan Metje has achieved one of the major goals of his PhD," his co-supervisor Dr. Igor Kiyan explains. Pulse duration of 45 femtoseconds for monochromatized harmonics is 300 times shorter than the typical pulse duration of synchrotron radiation (15 picoseconds) and is comparable to the pulse length of a free-electron laser (FEL). "Our lab-based experiment has some advantages over FEL's," Aziz points out: "It allows time resolved photo-emission spectroscopy of molecular systems in solutions, so that we can investigate catalytic and energy materials under real conditions as well as the chemistry of natural processes which occur typically in liquid phases and at interfaces. And, last but not least, it is accessible all the time."


Story Source:

The above story is based on materials provided by Helmholtz-Zentrum Berlin für Materialien und Energie. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jan Metje, Mario Borgwardt, Alexandre Moguilevski, Alexander Kothe, Nicholas Engel, Martin Wilke, Ruba Al-Obaidi, Daniel Tolksdorf, Alexander Firsov, Maria Brzhezinskaya, Alexei Erko, Igor Yu. Kiyan, Emad F. Aziz. Monochromatization of femtosecond XUV light pulses with the use of reflection zone plates. Optics Express, 2014; 22 (9): 10747 DOI: 10.1364/OE.22.010747

Cite This Page:

Helmholtz-Zentrum Berlin für Materialien und Energie. "New tool to investigate the chemistry of nature: Laser-based tabletop setup generates ultrashort XUV light pulses." ScienceDaily. ScienceDaily, 30 April 2014. <www.sciencedaily.com/releases/2014/04/140430101924.htm>.
Helmholtz-Zentrum Berlin für Materialien und Energie. (2014, April 30). New tool to investigate the chemistry of nature: Laser-based tabletop setup generates ultrashort XUV light pulses. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2014/04/140430101924.htm
Helmholtz-Zentrum Berlin für Materialien und Energie. "New tool to investigate the chemistry of nature: Laser-based tabletop setup generates ultrashort XUV light pulses." ScienceDaily. www.sciencedaily.com/releases/2014/04/140430101924.htm (accessed July 31, 2014).

Share This




More Matter & Energy News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) — British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
7 Ways to Use Toothpaste: Howdini Hacks

7 Ways to Use Toothpaste: Howdini Hacks

Howdini (July 30, 2014) — Fresh breath and clean teeth are great, but have you ever thought, "my toothpaste could be doing more". Well, it can! Lots of things! Howdini has 7 new uses for this household staple. Video provided by Howdini
Powered by NewsLook.com
Amid Drought, UCLA Sees Only Water

Amid Drought, UCLA Sees Only Water

AP (July 30, 2014) — A ruptured 93-year-old water main left the UCLA campus awash in 8 million gallons of water in the middle of California's worst drought in decades. (July 30) Video provided by AP
Powered by NewsLook.com
Smartphone Powered Paper Plane Debuts at Airshow

Smartphone Powered Paper Plane Debuts at Airshow

AP (July 30, 2014) — Smartphone powered paper airplane that was popular on crowdfunding website KickStarter makes its debut at Wisconsin airshow (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins