Search by tag «Resonators» 5 results
ITMO University researchers and their collaborators presented a new principle of creating laser resonators. It will allow them to create light generating elements right on silicone chips. In this ITMO.NEWS article, you will learn how it can be used and how it can improve data transfer rate.
Results of the research performed by a joint team of physicists from ITMO University, Saint Petersburg Electrotechnical University "LETI", and the Australian National University, can be used to design highly efficient compact elements for microwave and optical devices, particularly elements for optical computers.
It is for several years now that ITMO University scientists have been working on the creation of supersensitive sensors for measuring ultra-low magnetic fields that occur, for example, in the brain. These sensors can be made from compact ceramic resonators and defect ensemble (NV centers) in a diamond. Recently, the physicists have published an article in the Review of Scientific Instruments journal, where they described a new, more efficient version of an antenna for such measuring devices. ITMO.NEWS spoke with the authors to find out why we should measure the magnetic field of the human brain, and how this is proposed to be done.
An international team of researchers from ITMO University, the Australian National University, and Korea University have experimentally trapped an electromagnetic wave in a gallium arsenide nanoresonator a few hundred nanometers in size for a record-breaking time. Earlier attempts to trap light for such a long time have only been successful with much larger resonators. In addition, the researchers have provided experimental proof that this resonator may be used as a basis for an efficient light frequency nanoconverter. The results of this research have raised great interest among the scientific community and were published in Science, one of the world’s leading academic journals. Scientists have suggested drastically new opportunities for subwavelength optics and nanophotonics – including the development of compact sensors, night vision devices, and optical data transmission technologies.
Scientists designed the first subwavelength dielectric resonators for light trapping at nanoscale that appears to be the simple silicon cylinder which is a hundred times thinner than a human hair. Such a structure is capable of trapping light ten times longer than any conventional resonator. Along with a simple shape and small size, this new resonator is a promising basis for the design of powerful nanolasers, biosensors, and various light transmitting devices. The results were published in Physical Review Letters.