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A new laser generation method: a laser without a reflector. This study, conducted by a team of physicists from the University of Innsbruck and Harvard University, shows that quantum emitters with spacing smaller than the wavelength can achieve constructive synchronization of photon emission, resulting in bright and extremely narrow bandwidth beams, even without any optical resonant cavities.The ac...
Recently, researchers from the Ultrafast Phenomena Laboratory at the University of Warsaw in Poland, in collaboration with a team from the Institute of Low Temperature and Structural Studies at the Polish Academy of Sciences, discovered an enhanced effect on upconversion nanoparticle emission. Relevant personnel have demonstrated that simultaneously exciting these nanostructures with two near-infr...
backgroundDr. Daniel Stone's research team from the University of Leeds in the UK is primarily focused on the study of oxidation reactions in the atmosphere and combustion processes. Dr. Stone is particularly interested in the chemical reaction processes of active substances that can control atmospheric composition and fuel combustion processes, such as hydroxide (OH), peroxide (HO2), and Crigee i...
On quartz sheets, the angular rhombic boron nitride crystals with a thickness of only 1 to 3 microns are as thin as cicada wings, but their energy efficiency is 100 to 10000 times higher than traditional optical crystals. At the opening ceremony of the 2024 Zhongguancun Forum Annual Conference held on April 25th, the world's thinnest known optical crystal was listed as one of the top ten technolog...
Stratasys (Nasdaq: SSYS) has announced its earnings for the third quarter of 2024, indicating a bright future for the company. The company is increasing profits and gross margins by cutting costs and focusing more on rapidly growing industries such as aerospace, automotive, defense, medical equipment, and dentistry. CEO Yoav Zeif shared that the new F3300 3D printer has performed well in the marke...