Search Menu
Photonics Media Photonics Marketplace Photonics Spectra BioPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

Compound Transforms IR into Broadband White Light

Facebook Twitter LinkedIn Email
A compound that can transform near-infrared (NIR) light into broadband white light could offer a cheap, efficient means to produce visible light. The light is also exceedingly directional, a desirable quality for devices such as microscopes that require high spatial resolution, or for applications with high throughput, such as projection systems.
white light
Illustration of red laser impinging onto the appearing cluster, inducing a glow and the emission of a white-light laser. Courtesy of Nils W. Rosemann.
Researchers from the Philipp University of Marburg and Justus Liebig University Giessen designed their compound of tin and sulfur, with a diamondoid-like structure, then coated the scaffolding with organic ligands. When irradiated with NIR laser light, the structure of the compound altered the wavelength of the light through a nonlinear interaction process, producing light at wavelengths that are visible to the human eye.

The researchers noted that the warm, white-colored light emitted was very similar to a standard tungsten-halogen light source (2856 K), and can be adjusted based on levels of excitation via the laser.

The development could open up new routes for advanced directed illumination technologies, especially since the materials used in this system are inexpensive, readily available and scalable. The research was published in Science (doi: 10.1126/science.aaf6138).

Photonics Spectra
Aug 2016
white light
Light perceived as achromatic, that is, without hue.
Indicating a capability to deal with a relatively wide spectral bandwidth.
Research & TechnologyeducationEuropeGermanynils rosemannNIRlight sourceswhite lightbroadbandphilippliebigGiessenmaterialsmaterials processingTech Pulse

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2023 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.