An optical fiber is constructed of a transparent core made of nearly pure silicon dioxide (SiO2), through which the light travels. The core is surrounded by a cladding layer that reflects light ...

and silicon dioxide (SiO2) to create antireflective coatings for lenses and solar cells. Spin coating enables the fabrication of high-quality optical devices with precise thickness and uniformity.

How can we capture ultrafast optical signals in real time? A time lens is one possibility — able to image the temporal profile of a short optical signal, analogous to a conventional lens.

Researchers have created a bilayer metasurface made of two stacked layers of titanium dioxide nanostructures, opening new possibilities for structuring light.