Keywords: 
• 激光场相干叠加 /
• 光束合成 /
• 相干合成 /
• SPGD 算法

Abstract: In the tiled-aperture coherent beam combining,the low filling factor will reduce the beam combining efficiency. To solve this problem,we proposed a filled-aperture coherent beam combining scheme based on the semi-transparent mirror. We studied the influences of the light intensity difference and wave-front phase error on the efficiency of the beam combination. The results show that it is not difficult to meet the tolerance requirement of light intensity difference and the wave-front phase er-ror requirement in the filled-aperture coherent beam combining.When considering the single factor,if the single beam's intensity is three times larger than the others',the efficiency of the combining can reach 90%.And if the phase error is less than π/5,the efficiency of the combining can reach 90.5%.We designed an experimental instrument to verify the feasibility of the filled-aper-ture coherent beam combining scheme.Experimental results show that,in the phase locked loop system,the output light intensi-ty is very stable,and the efficiency of the combining can be more than 95%.