There are many technology can obtain high quality images.Just like telescopes, microscopes,endoscopes and so on.But technological advances are only half the battle.The light emitted by an object can easily become distorted simply because the light moves through a medium before reaching the observer.
Air, water, and human tissue all distort the light waves and the images we could get from have lower quality and precision. There are different techniques to correct for distortion but they require knowing how the wavefront was distorted in the first place and although often successful, they cannot account for the most minute irregularities. So, researchers from University College Dublin developed a method to correct for smaller distortion than current techniques allow, using something known as quasiparticles. This could potentially be used to improve the resolution of images from chemical sensing to biomedicine, as well as complementing traditional methods such as adaptive optics in astronomy.
Once the distortions are precisely measured, it is possible to correct the shape of the wavefront and thus reconstruct the original light wave. The team used the peculiar physics phenomenon called a quasiparticle: a disturbance in a medium or material that behaves like a particle, but is not one.
There are several known quasiparticles, and they are used to simplify complex physical interactions. For example, it’s difficult to describe an electron moving in a semiconductor, such as the silicon chip in a computer, as it interacts with the other electrons and protons in the material; fortunately, thanks to the type of interactions, it can be approximated to a quasiparticle similar to the electron but with different mass moving through free space. So physicists can use the quasiparticle to describe the system.
The strength with which SPPs can be formed is intrinsically dependent on the angle at which light hits the surface. Distortions, even minuscule ones, slightly change the angle, which in turn affects the formation of the SPPs. The changes are measured by high-speed cameras and by taking two measurements at 90 degrees from one another, the researchers are able to fully reconstruct the original, undistorted light wave.