Optical clocks

Optical clocks are highly precise timekeeping devices that use the vibrations of light waves, specifically laser light at very high frequencies, to measure time. Unlike traditional atomic clocks, which rely on microwave signals from atoms like cesium, optical clocks use the oscillations of electrons in atoms or ions stimulated by visible or near-infrared laser light. Because these light frequencies are much higher, optical clocks can achieve greater accuracy and stability, making them valuable for advanced scientific research, global positioning systems, and testing fundamental physical laws.