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The well-known journal Optica published a paper in November 2024 titled "Near complete extraction of maximum stored energy from large core fibers using coherent pulse stacking amplification of femtosecond pulses"The authors of the paper were the University of Michigan, Lawrence Berkeley National Laboratory, Peking University, and the German Institute of Synchrotron Radiation.The specific technique...
Recently, according to Tom's Hardware, Lawrence Livermore National Laboratory (LLNL) in the United States is developing a PW (1015 W) level large aperture thulium (BAT) laser. It is reported that this laser has the ability to increase the efficiency of extreme ultraviolet lithography (EUV) light sources by about 10 times, and may potentially replace the carbon dioxide laser used in current EUV too...
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...
As one of the important means of transportation in modern society, the safety and performance of aircraft have always been the focus of attention. Behind the continuous pursuit of technological breakthroughs in the aviation industry, carbon fiber materials, as a lightweight and high-strength material, are gradually emerging in the application of aircraft fuselage.Combined with the application of ...
The laser additive manufacturing technology of pure copper (Cu) with complex geometric shapes has opened up vast opportunities for the development of microelectronic and telecommunications functional devices. However, laser forming of high-density pure copper remains a challenge.Recently, the forefront of additive manufacturing technology has noticed a joint report by the University of Hong Kong, ...