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中文摘要：
基于三级MOPA结构皮秒光纤激光器泵浦一段30 m长的国产光子晶体光纤（PCF）,实现了全光纤化结构的超连续谱（SC）光源。在PCF与单模光纤（SMF）模场不匹配条件下,通过仔细调节熔接参数,在19 W入射功率条件下实现了最大功率为5 W的稳定超连续输出,系统光-光转换效率为24%。输出能量被很好地限制在纤芯,纤芯光斑为六边形的基模光斑。研究了光谱的演变过程,在最高功率时,对应的光谱短波展宽至600 nm,长波超过1 700 nm。
英文摘要：
A supercontinuum（SC） source based on tri-stage MOPA configuration picosecond fiber laser pumping a 30 m-long home-made photonic crystal is reported.The system is all fiber,and a stable supercontinuum source with maximum power of 5 W at input power of 19 W is demonstrated by carefully adjusting the splicing parameter although the mode fields of the photonic crystal fiber and single mode fiber mismatch.The optical-optical conversion efficiency is 24%.The output energy is well confined in the fiber core,and the light spot of the core is in hexagon single mode style.The convolution of the spectrum with pump is also studied.The short wavelength is extended to 600 nm and the long wavelength is beyond 1 700 nm at the maximum output power.
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