
An international team of scientists from the Korea Advanced
Institute of Science and Technology (KAIST) in Daejeon (South Korea),
the Max Planck Institute of Quantum Optics (MPQ) in Garching (Germany),
and the Georgia State University (GSU) in Atlanta (USA) has now
managed to concentrate the energy of infrared light pulses with a nano
funnel and use the concentrated energy to generate extreme ultraviolet
light flashes. These flashes, which repeated 75 million times per
second, lasted only a few femtoseconds. The new technology can help in
the future to measure the movement of electrons with the highest
spatial and temporal resolution.
Light is convertible. The wavelengths composing the light can change
through interactions with matter, where both the type of material and
shape of the material are important for the frequency conversion. An
international team of scientists from the Korea Advanced Institute of
Science and Technology (KAIST), the Max Planck Institute of Quantum
Optics (MPQ), and the Georgia State University (GSU) has now modified
light waves with a nano funnel made out of silver. The scientists
converted femtosecond laser pulses in the infrared spectral range to
femtosecond light flashes in the extreme ultraviolet (EUV). Ultrashort,
pulsed EUV light is used in laser physics to explore the inside of
atoms and molecules. A femtosecond lasts only a millionth of a
billionth of a second
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