Scientists at Samara University, together with the Russian Academy of Sciences, have developed a new method for creating optical elements, which makes it possible to improve laser data-transmitting and biomedical devices. The research results were published in Optics Express magazine.
Russian scientists have developed a new approach to constructing metasurfaces, making it possible to create optical elements for devices that can control the polarisation and electromagnetic waves phases, as well as create light fields with previously unexplored properties, including unique laser beams.
The scientist also noted that higher-order metasurfaces provide a large overall reverse energy flow. That is, laser beams formed with polarising elements are resistant to interference from the transmission of information in various turbulent media, for example, in the Earth’s atmosphere.
The scientist explained that the implemented metasurfaces allow the creation of new types of optical traps. They work like a vacuum cleaner: the reverse energy flow near the optical axis makes the particles move to the source.
In addition, according to experts, combining a polariser and a focuser in one element makes it possible to create a large reverse energy flow near the optical axis. This will help improve optical tweezers, laser cutting and engraving in biology, medicine and material processing, as well as reduce the number of optical elements in devices.
Sourse: sputniknews.com
