摘要
为得到脉冲宽度为12ps、中心波长为1064nm的高功率超连续谱,提出了一种全光纤结构的超连续谱光源。将该光源作为抽运源,其输出功率在芯径为10mm的掺镱光纤中被放大至189 W。利用窄带滤波器、级间隔离器对脉冲信号进行放大,将放大后的脉冲信号注入长度为0.5 m的光子晶体光纤,产生了光谱范围为460~1700nm、输出功率为102.8 W的超连续谱。由于存在量子亏损和光谱传输损耗,当抽运功率从1.5 W提高至189 W时,超连续谱光-光斜率效率从90%降低至20%。
A supercontinuum spectrum source with all-fiber structure is proposed to obtain high power supercontinuum spectrum with the pulse width of 12 ps and the center wavelength of 1064 nm. The source is used as the pump source, and the output power is amplified to 189 W in a Yb-doped fiber with a length of 10 mm. A narrow-band filter and a interstage isolator are used to amplify the pulse signal. The amplified pulse signal is injected into a photonic crystal fiber with a length of 0.5 m, and supercontinuum spectrum is generated with the spectrum range of 460-1700 nm and the output power of 102. 8 W. For the existence of quantum defect and spectrum transmission loss, the light-light slope efficiency of the supercontinuum spectrum decreases from 90% to 30% when the pump power increases from 1.5 W to 189 W.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2017年第2期189-193,共5页
Chinese Journal of Lasers
关键词
激光光学
光纤光学
超连续谱
光子晶体光纤
斜率效率
laser optics
fiber optics
supercontinuum spectrum
photonic crystal fiber
slope efficiency
