Berkeley Lab paves the way for real-time ptychographic data streaming

05.06. 2018 Optics & Photonics News - Optics, Photonics, Physics News

What began nearly a decade ago as a Berkeley Lab Laboratory-Directed Research and Development (LDRD) proposal is now a reality, and it is already changing the way scientists run experiments at the Advanced Light Source (ALS)—and, eventually, other light sources across the Department of Energy (DOE) complex—by enabling real-time streaming of ptychographic image data in a production environment.

Antiferromagnetic materials allow for processing at terahertz speeds

25.05. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In high-speed fiber optics, it is often the case that either the bandwidth of the transmission media cannot keep up with the data flow or the data simply cannot be processed fast enough. Then the picture judders or the resolution is temporarily scaled down, and television viewers have to make do with lower resolution images. Soon, such low bandwidth could be a thing of the past. Researchers at the Czech Academy of Sciences, together with their colleagues at Mainz University, have discovered a way to dramatically increase data processing rates by around 100 times up to terahertz speeds.

When nuclei catch up with electrons

17.04. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In an attosecond study of the H2 molecule, physicists at ETH Zurich found that for light atomic nuclei, as contained in most organic and biological molecules, the correlation between electronic and nuclear motions cannot be ignored.

A milestone in petahertz electronics

13.03. 2018 Optics & Photonics News - Optics, Photonics, Physics News

In a semiconductor, electrons can be excited by absorbing laser light. Advances in the past decade have enabled measuring this fundamental physical mechanism on timescales below a femtosecond (10-15 s). Now, physicists at ETH Zurich have resolved the response of electrons in gallium arsenide at the attosecond (10-18 s) timescale, and gained unexpected insights for future ultrafast opto-electronic devices with operation frequencies in the petahertz regime.

Electrons surfing on a laser beam

11.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

The Large Hadron Collider at CERN in Switzerland, the largest accelerator in the world, has a circumference of around 26 kilometres. Researchers at Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Germany, are attempting to go to the other extreme by building the world's smallest accelerator—one that fits on a microchip. The research team has now taken another step towards achieving this ambition.

Asymmetric sound absorption lets in the light

06.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

If you've ever lived in an apartment building or stayed in a hotel room, you are probably familiar with the inconvenience of inadequate sound absorption. Acoustic absorption refers to the absorption of sound energy by a material. Whether it's to improve acoustics or to prevent noisy neighbors, sound absorption has multiple applications in engineering and architecture, which can be improved by asymmetric acoustics.

Asymmetric sound absorption lets in the light

06.10. 2017 Optics & Photonics News - Optics, Photonics, Physics News

If you've ever lived in an apartment building or stayed in a hotel room, you are probably familiar with the inconvenience of inadequate sound absorption. Acoustic absorption refers to the absorption of sound energy by a material. Whether it's to improve acoustics or to prevent noisy neighbors, sound absorption has multiple applications in engineering and architecture, which can be improved by asymmetric acoustics.