Day: April 29, 2020

Researchers at the Shanghai Institute of Applied Physics of the Chinese Academy of Sciences have recently proposed a new mechanism for generating high-brightness, fully coherent radiation based on storage ring light sources. Studies have shown that this operating mechanism can make full use of the characteristics of the storage ring electron beam, and can achieve…

A new world record in laser monochromaticity. German and American scientists jointly created a laser with a spectral line width of only 10 milliseconds (1 millihertz is 0.001 hertz), setting a new world record for laser pointer monochromaticity. According to a press release issued by the German Federal Institute of Physics and Technology, this is by far…

At present, the application of laser technology has entered our daily life and has become an ideal tool for material processing. At the same time, in the field of laser pointer technology and key devices, researchers have not stopped. Realize the widest spectrum dark soliton pulse output. Ultrashort pulse fiber laser has the characteristics of easy operation,…

Typical main medium for high-power single-mode fiber lasers. But beyond a certain threshold, they will show a completely new effect, the so-called lateral mode instability (TMI). At certain power levels, high-order modes or even cladding modes suddenly appear, energy is dynamically transferred between these laser pointer modes, and the beam quality is reduced. The beam starts to…

Spectral and time measurements can be performed using conventional techniques. They allow detection of effects such as SBS occurrences (time characteristics different from TMI) or SRS (spectral characteristics). Care should be taken to measure in the high dynamic range to observe early growth of parasitic spectral features, such as amplified spontaneous emission or SRS. This…

What are the challenges faced by this single-mode high-power fiber laser? These challenges can be divided into three main areas: a) improving pumping, b) designing active optical fibers with low optical loss and operating only in single mode operation, and c) measuring the resulting radiation correctly. In this article, we assume that challenge a) can…

If there is an obvious trend in the field of laser technology, it is the rise of fiber laser pointer. In high-power cutting and welding applications, fiber lasers have seized a large market share from high-power CO2 lasers and solid-state lasers. At present, some mainstream fiber laser manufacturers are exploring many new applications to meet more…

According to foreign media reports, the U.S. Missile Defense Agency is seeking high-flying long-endurance drones to carry high-energy laser pointer weapon systems in order to transfer intercontinental ballistic missiles that have just left the launch pad or are in the boost phase and have not yet launched The missile heads were destroyed together. The U.S. Missile Defense…

The output of the lidar is no longer the original point cloud data, but also the location and classification of each obstacle space, which type is it, and speed information. There are many things that laser pointer radar can do, including positioning, obstacle detection, classification and tracking, lane line detection, roadside detection, and so on. Lidar plays…