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The pump source, gain material, and resonant cavity are the three elements that make up a laser. Due to the selective effect of the resonant cavity on the lasing frequency, multi longitudinal mode operation is one of the characteristics of fiber lasers based on traditional resonant cavity structures, manifested as periodic beat peaks in the radio frequency (RF) spectrum and periodic fluctuations i...
Recently, researcher Zhang Wenfu from the National Key Laboratory of Ultrafast Optical Science and Technology of Xi'an Institute of Optics and Mechanics, researcher Chen Wei from the academician team of Guo Guangcan from the Key Laboratory of Quantum Information of the Chinese Academy of Sciences of the University of Science and Technology of China, and professor Yang Jun from the School of Intell...
Billions of years ago, in a distant galaxy, two black holes collided, triggering one of the most extreme cosmic events in the universe. The power of this phenomenon is so great that it distorts the structure of spacetime, emitting ripples called gravitational waves.These waves will eventually be detected on Earth by the Advanced Laser Interferometer Gravity Wave Observatory (LIGO) detector, and te...
Researchers from the Welding Research Institute of Aachen University of Technology in Germany reported on the development of a stable welding process for electron beam welding of thick plates used in the construction of offshore wind turbines. The relevant research results were published in Materials Science and Engineering Technology under the title "Development of a robust welding process for el...
Researchers from Bayreuth University and Konstanz University are developing new methods to control ultra short laser emission using soliton physics and two pulse combs in a single laser. This method has the potential to greatly accelerate and simplify laser applications.Traditionally, the pulse interval of lasers is set by dividing each pulse into two pulses and delaying them at different, mechani...