Eugene Tkalya of the Institute of Nuclear Physics at Moscow State University in Russia suggests making a thorium laser by firing conventional
ultraviolet lasers at crystals made mostly of lithium, calcium, aluminium and fluorine, with a sprinkling of thorium.
Not exact matches
Using an ultrafast, ultraprecise
ultraviolet laser, a team of physicists and biologists
at Vanderbilt University has taken an important step toward understanding the nature of these trigger signals.
The Dalian Coherent Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large
laser light source in the world dedicated to the particular range of short - wavelength light called vacuum
ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist
at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germany..
In a series of experiments, the team fired an unspeakably brief, extremely
ultraviolet laser pulse
at a helium atom to start exciting its pair of electrons.
Researchers
at the National Institute of Standards and Technology (NIST) have put this hydrogen «cure» to practical use, making optical fibers that transmit stable, high - power
ultraviolet laser light for hundreds of hours.
When used
at NIST to transmit
laser light to trap ions (electrically charged atoms), the fibers reduce stray light and fluctuations in
laser beam pointing and make it possible to transfer
ultraviolet light between separate optical tables, the paper notes.
To do this, they fired
ultraviolet laser pulses lasting 100 to 200 attoseconds (10 - 18 seconds)
at a helium atom to start exciting its pair of electrons.
The results show that the gap around the node
at sufficiently low temperatures can be well described by a monotonic d - wave gap function for both samples and the... ▽ More The energy gap of optimally doped Bi2 (Sr, R) 2CuOy (R = La and Eu) was probed by angle resolved photoemission spectroscopy (ARPES) using a vacuum
ultraviolet laser (photon energy 6.994 eV) or He I resonance line (21.218 eV) as photon source.