A new publication in Opto-Electronic Advances overviews advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers.
Optics & Photonics
May 05, 2022
0
3
Magnetic random-access memory (MRAM) technology offers substantial potential towards next-generation universal memory architecture. However, state-of-the-art MRAMs are still fundamentally constrained by a sub-nanosecond speed ...
Condensed Matter
Apr 29, 2022
0
76
Researchers have developed a new fabrication process that allows infrared (IR) glass to be combined with another glass and formed into complex miniature shapes. The technique can be used to create complex infrared optics ...
Optics & Photonics
Apr 07, 2022
0
135
Ultrashort flashes of light lasting less than a quadrillionth of a second are fast growing in technological importance. In laser sources, pairs and groups of light flashes can be created instead of individual flashes. Similar ...
Optics & Photonics
Nov 01, 2021
0
2094
Researchers have developed a fast and energy-efficient laser-writing method for producing high-density nanostructures in silica glass. These tiny structures can be used for long-term five-dimensional (5D) optical data storage ...
Optics & Photonics
Oct 28, 2021
4
2079
If you're old enough, you may still have a box of cassette or VHS tapes lying around. These storage devices were popular in the 1970s and 80s, but have since fallen into disuse, replaced by CDs and other digital media.
Nanomaterials
Sep 14, 2021
0
48
An Imperial-led team of international researchers has used a special X-ray probe to gain new insights into how electrons behave at the quantum level.
General Physics
Sep 01, 2021
0
784
One of the most important tasks in modern information technologies is controlling spin directions in magnets. State-of-the-art hard disk drives and large-volume magnetic storage used in data centers require magnetization ...
Optics & Photonics
Sep 01, 2021
0
222
Fractals are complex structures that usually exhibit self-similarity and have a non-integer dimension. The terminology "fractal" was first introduced by the famous mathematician Benoit B. Mandelbrot. He noticed that here ...
Optics & Photonics
Jul 20, 2021
0
253
Great leaps in science and technology have been propelled by recent advances in seeing fast evolving physical phenomena, as they happen. Femtosecond lasers from the infrared to the X-ray region have enabled us to 'watch', ...
Plasma Physics
Jul 16, 2021
0
140
A femtosecond is the SI unit of time equal to 10-15 of a second. That is one quadrillionth, or one millionth of one billionth of a second. For context, a femtosecond is to a second what a second is to about 31.7 million years.
The word femtosecond is formed by the SI prefix femto and the SI unit second. Its symbol is fs.
A femtosecond is equal to 1000 attoseconds, or 1/1000 picosecond. Because the next higher SI unit is 1000 times larger, times of 10-14 and 10-13 seconds are typically expressed as tens or hundreds of femtoseconds.
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