Researchers have developed a new laser beam that does not change speed as it travels through different media.
If you put a spoon in a glass of water, then itwill seem to be broken at the border between water and air. This effect occurs due to the fact that light travels through air faster than through water, so its rays bend when it enters a denser environment. However, a team of physicists at the University of Central Florida has created a laser that violates Snell's Law, which describes similar physical phenomena.
ScientistsThey have developed a system that generates laser pulses that are able to behave the same way in different environments or even move faster in denser materials.In this case, it is not the vibrations of the light waves themselves that change, but the speed of their peaks.The team achieved this with the help of a spatial light modulator, which physicists called "space-time wave packets."
Since the rays are not refracted, they can simultaneously reach points in space in different environments, which makes it possible to bring military communications technology to a new level.
However, despite the violation of the usual for usFermat's postulates on the propagation of light, scientists say that such laser beams do not contradict the laws of physics and fit into the special theory of relativity.
We also previously reported on the development of an efficient method for converting light into matter.
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