Robust All-Fiber 200W Single Frequency Laser at 1064 nm with Low Intensity Noise

High power lasers are essential in various scientific applications, including cold atom trapping, frequency metrology or gravitational wave detection [1], where single frequency behaviour is required as well as low amplitude and frequency noise. Nevertheless, they can be useful in other industrial processes requiring good beam quality and low noise, like holography, interferometry or optical pumping of solid state lasers.