Light reflux phenomenon proposed 50 years ago is the first “present”

Israeli researchers have demonstrated for the first time the return of light that travels forward, according to a report by physicists. This phenomenon was proposed by quantum physicists 50 years ago and has not been confirmed until now. This will help scientists use laser beams to detect the atmosphere and develop better-performing optical microscopes, photobeams, and so on.

“This ‘reflux’ phenomenon is so subtle that it requires precise control of the particle state, so no one has demonstrated it in 50 years,” explained dr. Elon Bajabad, of the Department of Physical Electronics at Tel Aviv University’s School of Electrical Engineering. This phenomenon reveals a system of waves that violate human intuition, either as a particle in quantum mechanics or as a beam of light. “

The similarity between light and quantum particles is that both can be made up of interference waves. Multiple waves can be added together to form a new wave, a construct called an overlay. If all the forward-transmitted waves are superimposed together, the resulting new wave achieves what is called “optical reflow”.

In the latest holographic experiment, the researchers decomposed the beam and reassembled it into a laser that appeared in the form of light waves that traveled relative to the positive angle of the axis. They construct different beams very carefully and precisely control the intensity and delay of the beams. When the beam is superimposed, they create a small seam for vertical beam movement to effectively measure the direction of the beam in different positions.

In most locations, light escaping from the crevices is displayed as it moves at positive angles, but in some places, although the light fired to the other side of the slit is superimposed by a beam that is all transmitted at a positive angle, the light escaping the slit still travels at a negative angle, clearly showing the return effect of light.

Bajabad concludes that if all interference waves traveling in one direction are constructed in a special way and the direction of transmission of the waves is accurately measured at a particular position and time, the wave will find that it is backward. Although this behavior violates our intuition, it still obeys the laws of nature. Scientists can use the latest research to detect the atmosphere by emitting a laser beam and inducing signals transmitted backward toward the laser source, and can also be used to precisely control the light field in small volumes, developing better-performing optical microscopes, optical beams, and so on.