The green flash is a rare, brief optical event of green, yellow, and sometimes blue that colors the horizon, occurring at ...

Laser frequency combs are light sources that produce evenly spaced, sharp lines across the spectrum, resembling the teeth of ...

White light is made of a spectrum of different colours ... prism is spread out into its different colours, a process called dispersion. This experiment is recorded as first being carried out ...

Instead, they provide a narrow spectrum that includes many wavelengths ... Figure 1. Chromatic dispersion causes shorter wavelengths to travel faster than longer wavelengths. Thus, light pulses ...

The light produced with the world-record spectrum, could facilitate many investigations ... On the other hand, the chromatic dispersion of the photonic crystal fibre can be manipulated by the fibre ...

This is the first time a single lens has been used to focus the entire spectrum of light, including white light. According to the authors of the study, published in Nature Nanotechnology ...