多芯光子晶体光纤的相干组束集成  

Coherent beam combination of integrated photonic crystal fiber

作　　者：陈月娥[1,2] 邵秋峰[3] 王金生[4] 

机构地区：[1]燕山大学理学院,河北秦皇岛066004 [2]吉林省隆化测控设备制造有限公司,吉林长春130117 [3]装甲兵工程学院,北京100039 [4]燕山大学继续教育学院,河北秦皇岛066004

出　　处：《红外与激光工程》2014年第5期1454-1457,共4页Infrared and Laser Engineering

基　　金：河北省自然科学基金(F2013203086);吉林省自然科学基金(20140520102JH)

摘　　要：高功率光纤激光器的广泛应用前景使其成为固体激光器的研究新热点,但是由于受到受激布里渊散射(SBS)和受激拉曼散射(SRS)的影响,严重限制了单根光纤的最大输出功率,与此同时随着输出功率的增加带来了光束质量变差的问题。光纤激光并联组束的方法因其光束质量差,也在其应用上受到诸多限制,而基于倏逝波耦合的多路激光束相干叠加实现的相干组束技术则能使输出功率得以提高的同时保证好的光束质量。基于上述的问题,文中设计出解决方案并理论计算对比了一芯、三芯、七芯的光子晶体光纤光强分布情况,证明集成式多芯光子晶体光纤可以很好地实现相干组束输出,这为实现光纤激光器高功率和高光束质量输出提供新的可能途径。The wide application of high power fiber laser makes it become a new hotspot in the research of solid state laser. But due to stimulated Raman scattering（SRS） and stimulated Brillouin scattering（SBS） effect, the maximum output power of single fiber is limited, and beam quality becomes worse with the increase of power variation. Method of parallel beam combining of fiber laser because of its poor beams, so that its application is restricted, and coherent beam combination technology can make multiple laser beam coherent superposition, so that the output power can be improved while ensuring good beam quality. In this paper, the design and theoretical calculation of one core, three core, seven core photonic crystal fiber light distribution were conducted, proving that integrated photonic crystal fiber can be very good to achieve coherent beam output, while achieving a high output power and high beam quality of fiber laser.

关 键 词：光子晶体光纤 相干组束 高功率 倏逝波 

分 类 号：TN248.1[电子电信—物理电子学]