
Chinese researchers have developed a two-kilowatt (kW) fibre laser capable of operating without the protection of heating or cooling systems across Earth’s most extreme climates – from temperatures of minus 50 degrees Celsius (minus 58 degrees Fahrenheit) in the Arctic to 50 degrees Celsius (122 degrees Fahrenheit) in the Sahara Desert.The device, designed for quick and ultra-portable deployment for both defence and industrial purposes, starkly contrasts with counterparts with similar power...