Gas reduction technology of fiber laser helps to improve the cutting quality of low-carbon steel

Recently, a research team from the Aerospace Laser Technology and Systems Department of the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, proposed a new holographic imaging technology using frequency domain direct sampling. The relevant results were published in Optics Letters under the title of "Fourier inspired single pixel holography".Digital holography is a tech...

Researchers at the Technion-Israel Institute of Technology have developed a coherently controlled spin optical laser based on a single atomic layer.This discovery was made possible by coherent spin-dependent interactions between a single atomic layer and a laterally constrained photonic spin lattice, which supports a high-Q spin valley through Rashaba-type spin splitting of photons of bound states...

In recent years, breakthroughs in the preparation technology of lithium niobate single crystal thin films have greatly promoted the important application of lithium niobate crystals in micro nano optical devices such as optical metasurfaces. However, the high hardness and inactive chemical properties of lithium niobate crystals pose significant challenges to micro nano processing; In addition, con...

Researchers at the University of Sydney combined photon filters and modulators on a single chip, enabling them to accurately detect signals on the broadband RF spectrum. This work brings photonic chips closer to one day, potentially replacing larger and more complex electronic RF chips in fiber optic networks.The Sydney team utilized stimulated Brillouin scattering technology, which involves conve...

Using light beams for communication is not a new idea, even outside of Star Trek, Star Wars, and other similar fantasy stories. Scientist and science fiction writer Arthur Clark predicted that beam communication, at that time modern satellite communication was just a dream.In 1975, the magazine published an article about laser communication or laser communication equipment. The demonstrati...