Researchers have shown that optical spring tracking is a promising way to improve the signal clarity of gravitational-wave ...

Lasers are known for the monochromatic nature of their light, so much so that you might never have thought there could be such a thing as a white laser. But in the weird world of physics ...

In a new study, researchers at Osaka University have created the world's first compact, tunable-wavelength blue semiconductor ...

Researchers have made a significant breakthrough by observing how light can block other light, creating a visible shadow.

Lasers are essentially specialized light sources which emit a narrow beam of coherent ... Coherence represents an ideal state for any wave and exists in two forms: temporal and spatial. While ...

A new experiment has demonstrated something that sounds physically impossible – light itself casting a shadow. It turns out that if you manipulate a laser just right, then hit it side-on with ...

the first LASERs were low-powered devices compared to the much more highly evolved radio wave devices. This is the most likely reason that earlier searches for extraterrestrial intelligence were ...

An SPP is a light wave trapped at the metal/dielectric interface ... Furthermore, it has long been believed that small lasers could only be constructed with dielectric cavities, where the cavity ...