Beams of light taught to change the speed and direction of movement

The authors of the new work have discovered a new variation of light rays that can periodically change the speed and speed of the

They note that both of these properties affect the spatial and temporal shape of these flashes of light, including where they will be.the center of the beam intensity and at what speed or where it will bemove.

A set of diaphragms created by researchers,lenses and other optical devices allows you to set the Rayleigh length and frequency modulation of the laser beam so that together they control the rate and direction of movement of the center of intensity.

This allowed them to arrange the laser beam in such a way that the brightest part of it began to reciprocate.

When creating such a beam, the center of its intensityfirst it moves forward at the speed of light, then it slows down and begins to move backward, and then it moves forward again, moving in space and time along a back-and-forth trajectory. As our experiments have shown, such rays have many practical and scientific applications. 

Li Zhaoyang, Associate Professor at Osaka University

According to the authors, their discovery can be used to control its brightness at a specific point in space and during a specific time period.

Such capabilities will be useful for creating optical traps used in atomic clocks, as well as for experiments in nanotechnology, biology, and medicine.

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