Researchers use circularly polarized light to control the direction of exciton polaritons in 2D semiconductors, enabling new ...

More information: Ghada Dushaq et al, Electro-optic tuning in composite silicon photonics based on ferroionic 2D materials, Light: Science & Applications (2024). DOI: 10.1038/s41377-024-01432-2 ...

"The trapped light also behaved like it is traveling in a 2D space." Guiding light. The newly invented system is a way to guide light—known as a waveguide—that is essentially two-dimensional.

The team deciphered the mechanism responsible for the effect they found: Bound electron-hole pairs, so-called excitons, in 2D semiconductors rotate the polarisation of the light very strongly when ...

First, a laser beam is often 1,000 times broader than a nanotube, thus the material absorbs relatively little energy. Second, the light waves must be exactly aligned with the nanotube to distribute ...