Existing atomic clocks rely on this a device to "emit light at millions of discrete frequencies such that their spectra resemble long combs with teeth that have even, precisely known spacing." ...

Scientists have designed a new atomic clock, using laser light and ytterbium atoms, that is ten times more stable than previously reported clocks. Ytterbium atoms are generated in an oven (large ...

Macquarie University researchers have demonstrated a technique to dramatically narrow the linewidth of a laser beam by a ...

"Atomic clocks bring cosmology and astrophysics down to Earth, enabling searches for ultra-light particles that could explain dark matter in a laboratory." When you purchase through links on our ...

Light bounces back and forth between the mirrors nearly 30,000 times before leaking out through the mirrors. ... Today's best atomic clocks are limited in part by laser noise.

Scientists have developed a "microcomb chip" — a 5 millimeter (0.2 inches) wide computer chip equipped with tiny teeth like those on a comb — that could make optical atomic clocks, the most ...

When atomic clocks first appeared in the 1960s, they defined the second based on the properties of cesium atoms, which absorb and emit light at a reliable frequency.

In contrast, optical atomic clocks measure the oscillation of atoms that "tick" much faster than cesium atoms when pulsed with light in the visible range of the electromagnetic spectrum.

Since the 1960s, the second has been defined by atomic clocks made of cesium atoms, which absorb and emit light at a particular frequency that determines the length of a second.

“The superradiant laser light is still billions of times weaker than typical lasers, but the key point is that the color or frequency of the light should be very stable,” Thompson said. Such a laser ...

The atomic clock at satellite B will then measure the frequency of the incoming laser light from A. Because the atomic clocks are identical, any difference in the frequencies measured at A and B could ...

"Atomic clocks bring cosmology and astrophysics down to Earth, enabling searches for ultra-light particles that could explain dark matter in a laboratory," Calmet said. Atomic clocks measure time ...