Lasers are widely used as high power sources of light operating at a specific frequency. But how does this frequency get selected when a laser is turned on, and how quickly?
Optics & Photonics
Aug 13, 2018
0
61
Terahertz radiation can be used for a wide variety of applications and is used today for airport security checks just as much as it is for material analysis in the lab. The wavelength of this radiation is in the millimetre ...
Optics & Photonics
Jul 11, 2018
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89
Physicists at the University of Innsbruck are on the hunt for nitrogen-containing molecules in space. Using terahertz spectroscopy, they directly measured two spectral lines for one particular molecule for the first time. ...
General Physics
Jun 28, 2018
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8
A team headed by the TUM physicists Alexander Holleitner and Reinhard Kienberger has succeeded for the first time in generating ultrashort electric pulses on a chip using metal antennas only a few nanometers in size, then ...
Optics & Photonics
Jun 27, 2018
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405
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 ...
General Physics
May 25, 2018
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21
Wi-Fi and cellular data traffic are increasing exponentially but, unless the capacity of wireless links can be increased, all that traffic is bound to lead to unacceptable bottlenecks.
Optics & Photonics
Apr 30, 2018
0
77
The ability to harness light into an intense beam of monochromatic radiation in a laser has revolutionized the way we live and work for more than fifty years. Among its many applications are ultrafast and high-capacity data ...
Optics & Photonics
Apr 27, 2018
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430
Physicists at MIPT and their British and Russian colleagues revealed the mechanisms leading to photocurrent in graphene under terahertz radiation. The paper published in Applied Physics Letters ends a long-lasting debate ...
Optics & Photonics
Apr 25, 2018
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26
A team of physicists at the University of Sussex are developing the science to create a safe and efficient 'paint' that can reveal, with terahertz (THz) radiation, the contents of luggage or objects hidden in clothing.
Optics & Photonics
Apr 10, 2018
0
91
DESY scientists have created a miniature particle accelerator for electrons that can perform four different functions at the push of a button. The experimental device is driven by a terahertz radiation source and can accelerate, ...
Optics & Photonics
Apr 4, 2018
0
267
