Physicists observe amplification of an optical signal within cubic nonlinear nanostructures
Left: A scheme of nonlinear interaction of a plasmonic pump and localized, and, as a result, Stimulated Raman Scattering occurs Right: A plot of scattered intensity vs the pump power Credit: Kazan Federal University
The coherent amplification of a localized optical signal within a planar titanium nitride nanoantenna has been achieved by scientists of Kazan Federal University (under the leadership of Sergey Kharintsev) and physicists from Harvard University, Nazarbayev University, and Imperial College London.
The results have been recently published in Nano Letters.
“The observable phenomenon is based on the nonlinear interaction of surface plasmon-polaritons and localized Stokes wave”, explained Dr. Kharintsev.
“Stimulated Raman (gain) emission and (loss) absorption of light are generated within a planar TiN nanoantenna exposed to a continuous laser wave with a modest power”.
According to the physicists, these results will contribute to the development of a novel area in material sciences, in which plasmonic, Raman-active, and refractory materials are studied for amplifying optical signals beyond the diffraction limit of light.
Media Contact
All latest news from the category: Physics and Astronomy
This area deals with the fundamental laws and building blocks of nature and how they interact, the properties and the behavior of matter, and research into space and time and their structures.
innovations-report provides in-depth reports and articles on subjects such as astrophysics, laser technologies, nuclear, quantum, particle and solid-state physics, nanotechnologies, planetary research and findings (Mars, Venus) and developments related to the Hubble Telescope.
Newest articles
First-of-its-kind study uses remote sensing to monitor plastic debris in rivers and lakes
Remote sensing creates a cost-effective solution to monitoring plastic pollution. A first-of-its-kind study from researchers at the University of Minnesota Twin Cities shows how remote sensing can help monitor and…
Laser-based artificial neuron mimics nerve cell functions at lightning speed
With a processing speed a billion times faster than nature, chip-based laser neuron could help advance AI tasks such as pattern recognition and sequence prediction. Researchers have developed a laser-based…
Optimising the processing of plastic waste
Just one look in the yellow bin reveals a colourful jumble of different types of plastic. However, the purer and more uniform plastic waste is, the easier it is to…