light itself—specifically, a laser beam—can block another beam, forming a visible shadow. “Our demonstration of a very counter-intuitive optical effect invites us to reconsider our notion of ...

Scientists have long used Gaussian beams to study how light interacts with matter. These beams resemble plane waves and rely ...

Scientists have unlocked a new way to control ionization, the process where atoms lose electrons, using specially designed ...

beam. Most of this scattered light is of an unchanged wavelength. A small part, however, has wavelengths different from those of the incident light; its presence is a result of the Raman Effect.