Laser Research Part 2

Battle Lasers! US, Russia, China Develop Brighter Beams for Blasting Enemies

19.03.2017

  • Also developing laser weaponry is China, which presented its Silent Hunter laser system at the International Defense Exhibition and Conference in the United Arab Emirates in February 2017. The system is capable of disabling car engines at a distance of one mile and has a capacity of 50-70 kilowatts. China’s other laser system, the Low Altitude Guard II land mobile complex, was presented at a defense exhibition in South Africa in 2016. Based on a conventional military truck chassis, the 30-kW system is capable of destroying unmanned aerial vehicles and helicopters.

https://sputniknews.com/military/201703191051743367-russia-united-states-china-laser-systems/

Inside China’s High-Tech Space-Based Laser Arsenal

11.03.2017

  • In an effort to counteract a network of US navigation, intelligence, and communication satellites capable of unmatched precision strikes, China is developing its own arsenal of electromagnetic railguns, powerful microwave weapons, and high-powered lasers. This weaponry could feature in future space-based ‘light war’ satellite attacks. Researchers, Zeng Yu-quang, Wang Zhi-hong, and Gao Ming-hui first wrote about the notion of a space-based laser weapon in 2013 in the Chinese Optics journal. All three scientists work for leading laser-weapons technology organization the Institute for Optics, Fine Mechanics and Physics.

https://sputniknews.com/military/201703111051468609-china-develops-space-based-laser/

Made in China Laser Cannon Built to Destroy UAV Swarms a Big Hit at IDEX 2017

Feb 24, 2017

  • A new Chinese laser weapon designed to shoot down aerial drone swarms made by Poly Technologies, a firm founded and owned by the People’s Liberation Army (PLA), is drawing inordinate attention at the ongoing IDEX 2017 arms show in Dubai. The laser weapon is called “Silent Hunter,” a fiber-optic laser air defense system also known as the “Low Altitude Laser Defending System” (LASS). The laser weapon on display at IDEX 2017 was designed to be mounted on a special truck, and is the first mobile version of Silent Hunter seen at IDEX. Silent Hunter is designed mainly to shoot down large numbers of low-altitude unmanned aerial vehicles (UAVs). Poly Technologies said the laser is powerful enough to pierce five layers of 2 mm-thick steel plates at a distance of 800 meters, or 5 mm-thick steel plate from 1,000 meters distant.

http://www.chinatopix.com/articles/111840/20170224/made-china-laser-cannon-built-destroy-uav-swarms-big-hit.htm

Ultrafast laser pulses meet magnetic materials in new research

February 20, 2017

  • Recently, research has focused on the BiFeO3 (BFO) and Sr-doped LaMnO3 heterostructure for a series of novel physical properties that originate from the antiferromagnetic (AFM) and ferromagnetic (FM) exchange interaction across the heterointerface. In an article recently published in SCIENCE CHINA Physics, Mechanics & Astronomy, researchers at the Institute of Physics, Chinese Academy of Sciences, reported their investigation on the ultrafast laser-excited magnetization dynamics of ferromagnetic (FM) La0.67Sr0.33MnO3 (LSMO) thin films with epitaxial grown BiFeO3 (BFO) coating layers.

https://phys.org/news/2017-02-ultrafast-laser-pulses-magnetic-materials.html

Nearly-octave wavelength tuning of a continuous wave fiber laser

15 February 2017

  • The wavelength tunability of conventional fiber lasers are limited by the bandwidth of gain spectrum and the tunability of feedback mechanism. Here a fiber laser which is continuously tunable from 1 to 1.9 μm is reported. It is a random distributed feedback Raman fiber laser, pumped by a tunable Yb doped fiber laser. The ultra-wide wavelength tunability is enabled by the unique property of random distributed feedback Raman fiber laser that both stimulated Raman scattering gain and Rayleigh scattering feedback are available at any wavelength. The dispersion property of the gain fiber is used to control the spectral purity of the laser output.

http://www.nature.com/articles/srep42611

China develops world’s brightest VUV free electron laser research facility

January 13, 2017

  • A team of Chinese scientists announced on January 13 that they have developed a new bright vacuum ultraviolet FEL light source called the Dalian Coherent Light Source (DCLS), which can deliver the world’s brightest FEL light in an energy range from eight to 24 eV. High-gain, free electron lasers (FEL) provide the brightest light sources from VUV to the X-ray region, levels that conventional laser technology cannot reach.

https://phys.org/news/2017-01-china-world-brightest-vuv-free.html

The Chinese Military Now Has Laser Weapons

December 19, 2016

  • In addition to the new stealth fighters, killer drones, tanks and carrier-killing missiles that it unveiled this year, the Chinese People’s Liberation Army also introduced portable laser weapons, which are much closer to laser guns found in science fiction, PopSci reported. One of the systems displayed at last year’s domestic Chinese police expo, the PY132A laser can be an effective tool against enemy drones, while the Low Altitude Guard laser turret is said to be good for taking down small UAVs in police and law enforcement operations. For military use, the PLA has more powerful versions, such as the PY132A, WJG-202, and BBQ-905 laser rifles. These laser weapons are expected to be very useful in blinding slow flying UAVs or in destroying thermal imagers of enemy tanks. Knocking out enemy security cameras and rendering sensors useless are also easier now with the use of these bad boys.

http://nextshark.com/the-chinese-military-now-have-laser-weapons/

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