Scientists from University of Marburg and JILA (University of Colorado and NIST) establish a high-precision framework for laser spectroscopy to directly accesses quantum properties of matter. Quantum mechanics describes the complete information of any given system. Even though nanotechnolog ... more
It's Not an Illusion
Transforming Infrared into Visible Light
Researchers have developed a compound that can transform near-infrared light into broadband white-light, offering a cheap, efficient means to produce visible light. The emitted light is also exceedingly directional, a desirable quality for devices like microscopes that require high spatial resolution, or for applications with high throughput, such as projection systems.
Nils Wilhelm Rosemann and colleagues designed their compound of tin and sulfur, and with a diamondoid-like structure, then coating this scaffolding with organic ligands. When a laser directs near-infrared light into the compound, the structure of the compound alters the wavelength of the light through a non-linear interaction process, producing light at wavelengths that are visible to the human eye.
The authors note that the warm, white-colored light that's emitted is very similar to a standard tungsten-halogen light source (2856 Kelvin), and can be adjusted based on levels of excitation via the laser. This development could open up new routes for advanced directed illumination technologies, especially since the materials used in this system are cheap, readily available, and easily scalable.
- infrared radiation
Physicists succeed in characterizing the quantum state of a complex system Physicists from Marburg and the US have succeeded in characterizing the quantum state of a system consisting of millions of particles by bringing experimental data and theoretical predictions into agreement. The team ... more
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