The team analyzed two sets of data. First, scientists looked for oscillations in the frequency ratio between two optical cavity lasers connected by a 1,380 mile (2,220 km) fiber link. These ...

When optically pumped with 488-nm laser pulses, the cavity was observed to output green stimulated emission at a wavelength of 520 nm — an order of magnitude larger than the nanoparticle.

Optical cavities are fundamental components in various applications, including lasers, optical filters ... It quantifies the ratio of the energy stored in the cavity to the energy lost per oscillation ...

This feedback loop can generate self-sustained oscillation if its overall gain ... or tuned by changing the wavelength of the laser or the cavity's optical path length. Finally, the circulating ...