And, yes, by controlling the relative phase and amplitude of the four beams of light, the researchers could produce a focus anywhere inside the square formed by the beams.

A KAIST research team in collaboration with the University of Wisconsin-Madison theoretically suggested a graphene-based active metasurface capable of independent amplitude and phase control of ...

The method takes the amplitude and phase excitation coefficient of feeds as optimization variables, establishes objective functions based on the number of synthetic feeds, the gain of synthetic ...

Complex light modulation—controlling light’s amplitude and phase—is key to many laser applications such as optical tweezers and holographic displays. To achieve such modulation ...

As expected, the uniform AC Ampere magnetic field's amplitude and phase were imaged using NV centers with high spatial resolution (2-5 µm), validating both measurement protocols.

To compute, you need a light source that is pixelated. At each pixel, you can vary two properties: the phase and the amplitude. The variation task is done by a spatial light modulator.

The inset scale is the same as in the main plot. b, Reconstructed amplitude and phase structure of the image imprinted on the unknown pump. Credit: Nature Photonics (2023).