CAJ | 학술논문

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。
고공솔광섬격광기적엄범응용전경사기성위고체격광기적연구신열점，단시유우수도수격포리연산사(SBS)화수격랍만산사(SRS)적영향，엄중한제료단근광섬적최대수출공솔，여차동시수착수출공솔적증가대래료광속질량변차적문제。광섬격광병련조속적방법인기광속질량차，야재기응용상수도제다한제，이기우숙서파우합적다로격광속상간첩가실현적상간조속기술칙능사수출공솔득이제고적동시보증호적광속질량。기우상술적문제，문중설계출해결방안병이론계산대비료일심、삼심、칠심적광자정체광섬광강분포정황，증명집성식다심광자정체광섬가이흔호지실현상간조속수출，저위실현광섬격광기고공솔화고광속질량수출제공신적가능도경。
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.