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Researchers at Busan National University, led by Kwangseuk Kyhm, Professor of Ultra Fast Quantum Optoelectronics from the Department of Optics and Mechatronics, are enhancing signal amplification inside cesium bromide lead perovskite nanosheets through patterned waveguides.Perovskite is a highly attractive material in solar cell applications, but its nanostructure is now being explored as a new la...
An interdisciplinary research group, including the German synchrotron radiation accelerator DESY and the Helmholtz Institute in Jena, Germany, reported that invisible gratings made of air not only are not damaged by lasers, but also maintain the original quality of the beam. The relevant research has been published in Nature Photonics under the title of "Acousto opt modulation of gigawatt scale la...
On February 3, 2025, Lumentum Holdings has appointed Michael Hurlston as its President, CEO, and Director, effective from February 7. Hurlston replaces Alan Lowe, who has been serving as the company's President and CEO since 2015. Lowe will continue to serve as a member of Lumentum's board of directors and as a consultant to the company.Lumentum is a major supplier of high-speed optical transceive...
Compared to Impressionist paintings taken 50 years ago, upon closer inspection of Impressionist paintings in museums, you may notice some strange things: some are losing their bright yellow hue.Taking the dramatic sunset in Edward Munch's masterpiece "The Scream" as an example. The once bright orange yellow parts of the sky have faded to off white.Similarly, in his painting "The Joy of Life", Henr...
Reducing stray light is one of the main challenges in combustion experiments using laser beams (such as Raman spectroscopy) for detection. By using a combination of ultrafast laser pulses and gated ICCD or emICCD cameras, a time filter can be effectively used to remove bright and constant flame backgrounds. When the signal reaches the detector, these cameras can open electronic shutters within the...