脉冲激光的非相干合成技术研究

为了实现高功率、高光束质量的激光输出,采用脉冲激光同步延时控制技术,将多束脉冲激光按时序合成一束脉冲激光,可用于产生大功率激光源。利用所设计的激光脉冲同步延时控制器,控制各个激光脉冲的时序,使按时序输出的多路激光脉冲依次通过光束合成装置,在空间合成为一束。在实验中将3束脉冲激光束合成,合成效率达到95.8%。结果表明,合束后的脉冲激光功率基本等于各束光相加的总和,同时保持了较好的光束质量。

Study on incoherent combining technology of pulsed laser beams

In order to get laser output with high average power and good beam quality, the method of sequence combing technology of pulsed lasers was developed based on the synchronizing and delay controlling technique of pulses. The multiple beam combination was performed through the optical beam combination device (OBCD).Three pulsed beams were combined successfully with this method, and the high combining efficiency of 95.8% was achieved. Experimental results show that the power of the combined beam is nearly equal to the total power of every single beam with high beam quality.