When we first heard the term “random laser,” we did a double-take. After all, most ordinary sources of light are random. One defining characteristic of a traditional laser is that it emits coherent ...

Random lasers represent a novel class of light sources in which traditional optical cavities are replaced by disordered media that provide feedback through multiple scattering events. This cavityless ...

Physicists at Umeå University, in collaboration with researchers in China, have developed a laser made entirely from biomaterials – birch leaves and peanut kernels. The environmentally friendly laser ...

(Nanowerk Spotlight) Converting electrical energy into laser light has traditionally relied on precisely aligned optical components that direct light back and forth within a cavity. While these ...

Birch leaf and peanut kernel-based source could be a cheap, accessible tool for diagnostics and imaging. Jia Wang, of the Department of Physics at Umeå. Physicists at Umeå University, Sweden, in ...

A renewable, low impact random laser built from birch leaves and peanuts shows a path to affordable medical diagnostics using fully sustainable materials. (Nanowerk News) Physicists at Umeå University ...

Random numbers are crucial in the generation of cryptographic keys for classical and quantum cryptography systems, the reliability of modern networked society, and stochastic simulation, etc.

Not Your Typical Laser Lasers are typically associated with precise beams and high-tech equipment. But the one built by Wang’s team works differently. Called a random laser, it generates light by ...

When we first heard the term “random laser,” we did a double-take. After all, most ordinary sources of light are random. One defining characteristic of a traditional laser is that it emits coherent ...