Search by tag «nanoantennas» 3 results
Young scientists from ITMO University have developed a new type of nanoscale light sources based on halide perovskites. The nanosources are subwavelength nanoparticles which serve both as emitters and nanoantennas capable of amplifying light emission inherently without need for additional devices. Moreover, perovskites enable tuning of emission spectrum throughout a visible range by varying the composition of the material. This makes the new nanoparticles a promising platform for creating compact optoelectronic devices such as optical chips, light-emitting diodes, or sensors. The results were published in Nano Letters, one of the leading journals on nanophotonics.
Physicists from ITMO University, for the first time, theoretically predicted and experimentally demonstrated a method for effectively controlling the propagation of surface waves using an ultra-compact dielectric nanoantenna. In the experiment, the researchers were able to achieve directional launching of surface plasmons. Moreover, the surface plasmons, having wavelengths which differing by only 10 nanometers, spread out in opposite directions. This system allows for the creation of an effective, inexpensive and much more compact demultiplexer, which could be used in the future in devices for optical information processing on a chip. This study was published in the journal Laser & Photonics Reviews.
Sergei Makarov and Alexander Krasnuk, senior researchers at the Department of Nanophotonics and Metamaterials received the Foundation for Support of Education and Science (Alferov's Foundation) award for their research on non-linear tunable semiconductor and hybrid nanoantennas. According to the jury, their main scientific achievement was the development of a new platform for photonic devices based on dielectric nanoantennas in optical band, as well as the use of femtosecond laser technologies in creation of ultrafast optical nanodevices. In an interview with our newsportal, Sergei Makarov talked about new optical modulators and the work of the recently founded Laboratory of Hybrid Nanophotonics and Optoelectronics.