Coherent combining technology of master oscillator power amplifier fiber arrays.
Coherent beam combination of fiber laser array is an important technology of realize high-power, high-radiance fiber laser system. In this paper, Master Oscillator-Power Amplifier scheme is used to realize phase controlling of three ytterbium fiber amplifiers, the experiment results of both two and three fiber amplifiers are given and compared. Far-field patterns with different fill factor are studied experimentally. We perform optical phase-noise measurements of a commercial 1-W ytterbium fiber amplifier using our phase control electronics, the dominant phase noises of the 1-W fiber amplifier are at frequencies below one kilohertz.
Xiao
R
R
College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073,China. ruixiao203@163.com
Hou
J
J
Liu
M
M
Jiang
Z F
ZF
D000669:Amplifiers, Electronic; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D008029:Lighting / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation*; D018511:Systems Integration; D013672:Technology / Q000295:instrumentation*