Scientists develop new compounds that can change the color of laser pointer beams
A team of scientists from Germany has developed a compound. It can convert infrared light into white light. The team is led by professors from the University of Marburg. The compound was designed with tin and sulfur, which has a diamond-like structure. Then the package is supported by organic ligands. The compound is made into a small amorphous powder, the professor and his collaborators said. This compound is non-volatile, air stable and thermally stable. It still has good thermal stability up to 572 degrees Fahrenheit. The core of the compound is composed of inorganic nanocrystals. The surface is wrapped with organic ligands. "They explained.
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When the direct near-infrared laser pointer beam passes through the compound. Its unique structure will change the wavelength of the beam through nonlinear interaction. The outgoing beam becomes visible light. The visible spectrum is similar to the color of a tungsten halogen lamp at 2900K. But it still maintains excellent beam divergence," said the researchers. The new compound emits broad-band light close to the excited state of the infrared laser. The emitted light still has good directivity. It can meet the high spatial resolution of the microscope or the high throughput of the projection system. Quantity requirements. This progress will open up a new path for direct lighting technology. In particular, the system material cost is low, easy to obtain, and has strong scalability.
2021-01-06 03:35:27
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