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A novel method is used to deflect the laser beam using only air. The interdisciplinary research team reported in the journal Nature Photonics that invisible gratings made solely of air not only do not suffer damage from lasers, but also retain the original quality of the beam. The researchers have applied for a patent for their method.Technology and PrinciplesThis innovative technology utilizes so...
The Polish Space Research Center of the Celestial Geodynamics Observatory located in Borowitz near Poznan will enhance its capabilities with a new and powerful laser.The first task of this state-of-the-art device is to enable researchers to accurately track the trajectories of 300 previously identified space debris in no less than six months.Observatory Director Pawe ł Lejba emphasized the i...
Recently, Dong Yibo, from the Photonic Chip Research Institute of Shanghai University of Technology, published his research findings titled "Nanoprinted Diffractive Layer Integrated Vertical Cavity Surface Emitting Vortex Lasers with Scalable Topological Charge" as the first author in the internationally renowned journal Nano Letters.This achievement was jointly completed by the team of academicia...
Laser processing is a relatively emerging non-contact processing method that utilizes the high energy of a beam of light to interact with materials and instantly vaporize or change their properties to achieve the expected manufacturing effect. It has gradually been promoted and applied in China in the past 20 years. Due to the different types, pulse widths, and wavelengths of laser generators, the...
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...