Недавно в Национальном институте информационных и коммуникационных технологий (NICT) в Японии объявили, что ее команда физиков успешно разработала первый в мире поверхностный лазер на основе квантовых точек индейцев, способную излучать дальний инфракрасный свет на стандартной длине волны 1550 нанометров, что делает его подходящим для оптических систем связи .}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
Traditional vertical-cavity surface-emitting lasers (VCSELs) are limited in application due to their operation in the near-infrared spectrum (850-940 nanometers). However, the NICT team achieved 1550-nanometer wavelength laser output for the first time by arranging multiple layers of indium quantum dots on an indium phosphide substrate. Quantum dots are composed of indium and arsenic atoms, with their size precisely designed to mimic artificial atomic properties. Their array is separated by ultra-thin layers, and when electrified, they generate 1550-nanometer infrared radiation pulses.
The laser offers advantages such as compact size, low heat generation, and minimal electrode current requirements. Scientists note that the new technology could significantly reduce the cost of optical communication transmitters, facilitate the integration of lasers into consumer and industrial electronic chips, and lay the groundwork for developing next-generation optical communication systems capable of high-temperature operation and high-speed performance.
