An ultraviolet photon-counting dual-comb spectrometer. Two ultraviolet frequency combs of slightly different pulse repetition frequencies are generated at very low light levels by nonlinear frequency ...

The new approach produces extremely accurate and stable frequencies and could significantly enhance precision timekeeping and high-resolution atomic and molecular spectroscopy. WASHINGTON — ...

X-ray beams aren't used just by doctors to see inside your body and tell whether you have a broken bone. More powerful beams ...

Physicists achieve major leap in precision and accuracy at extremely low light levels. Researchers at the Max Planck Institute of Quantum Optics (MPQ) have successfully developed a new technique for ...

One of the more exotic technologies being explored for Army networking is ultraviolet communications. It can be employed for non-line-of-sight (LOS) communications or direct LOS, and it is harder for ...

A 250 mW UV source developed by US researchers could suit quantum cryptography, spectroscopy or micromachining. A team from MIT, Wright-Patterson Air Force Base and AdvR has demonstrated a narrowband ...

BOULDER, Colo. – Physicists at JILA have created the first "frequency comb" in the extreme ultraviolet band of the spectrum, high-energy light less than 100 nanometers (nm) in wavelength.

An illustration showing a single nanoparticle converting low-frequency red light into extreme-ultraviolet light, which has a very high frequency. (Anastasiia Zalogina/Australian National University) ...

Tekhnoscan presents a new powerful tunable source of UV to blue-green ultra-narrow-linewidth radiation on the basis of tandem including a Ti:Sapphire laser and efficient resonant frequency doubler.

Nuclear clocks would measure time based on changes inside an atom's nucleus, which would make them less sensitive to external disturbances and potentially more accurate than atomic clocks. These ...