In this study, researchers developed an ultrafast infrared near-field optical microscopy technique that combines nanoscale spatial resolution and an approximately 150-femtosecond temporal resolution with a spectral resolution of about 10 cm⁻¹.

Credit: Caltech Three years after a team of Caltech scientists showed that pairs of entangled photons could double the resolution of a light microscope, the same lab has figured out a way to double down on that improvement. They have now achieved a fourfold resolution boost compared to a classical microscope, using a new optical design that sends one of the entangled photons through the microscope's optics three times rather than just once. The work, led by Lihong Wang, the B

Researchers at the University of Science and Technology of China have demonstrated skin mode tunability in photonic Floquet lattices. A potential applied at one boundary isolates a skin mode at the opposite boundary, turning it into a self-healing state that recovers its profile after disturbance. The approach enables control of non-Hermitian wave dynamics for mode routing and optical switching. Published in PhotoniX.

An international team from École polytechnique, Collège de France, and HZDR has experimentally realized an all-optical photonic time crystal. Using HZDR’s TELBE terahertz source, they strongly modulated the optical properties of a plasmonic metamaterial on picosecond timescales. This enables ultrafast control of light in the terahertz range and opens paths toward new lasers and optical technologies. Published in Nature.

Researchers observe how a photoinduced hidden state forms within 30 femtoseconds

Wits and UEA researchers reveal a new free-space route to chiral light for sensing and photonics.

When fast-moving electrons pass over nanostructured materials, they can make those materials emit light — a phenomenon called cathodoluminescence, already widely used in electron microscopy. The catch has always been controlling where that light goes once it's generated. Researchers from the University of Southern Denmark, with collaborators at ICFO and AMOLF, have now proposed a theoretical fix: programmable metasurfaces built from individually tunable nanoscale elements, us

A sheet of twisted carbon nanotubes has revealed a hidden talent scientists suspected for decades but had never managed to measure.

Penn physicists led by Bo Zhen have created hybrid light-matter particles that interact strongly enough to compute, pointing toward ultrafast, low-energy optical AI hardware.

MIT engineers have developed a way to generate 3D photonic devices with nanoscale features, by shrinking them after fabrication. In their new study, they created devices in a variety of shapes, including helices and a shape inspired by the wing of a butterfly.

Light-responsive hydrogels are attractive materials for mimicking dynamic microstructures in nature, providing platform for tunable devices in photonics, sensing, and biomedicine.

Light near the surface of ultra-thin optical fibers allows sorting of chiral nanoparticles based on their handedness