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Ultrashort pulse duration and broadband dual-comb laser system based on a free-running passively mode-locked Er-fiber oscillator
Laser Physics Letters ( IF 1.7 ) Pub Date : 2021-10-28 , DOI: 10.1088/1612-202x/ac308e
Xiao-Rong Gu 1, 2 , Hai-Dong Chen 1 , Yao Li 3 , Xin-Ru Cao 1 , Chang-Shun Wang 1 , You-Wen Liu 1
Affiliation  

We have demonstrated pulse duration compression and wavelength extension to a dual-comb free-running passively mode-locked Er-fiber oscillator. At first, the pulse duration of the dual-comb ultrashort pulses from the oscillator is nonlinearly compressed to ∼50 fs by fiber amplifiers. Then, a dual-comb supercontinuum laser source with broadband wavelength band from 1.0 to more than 1.75 m is achieved when the compressed pulses are used to pump highly nonlinear fibers. At last, utilizing the dual-comb supercontinuum source as the seed for spectral-selected Yb-fiber amplifiers, sub-100 fs ultrashort pulses are obtained at 1.0 m. This free-running dual-comb fiber laser system can provide ultrashort pulses with sub-100 fs pulse duration at 1.0 m, 1.5 m and broadband supercontinuum covering 1.0 to more than 1.75 m, so it can be potentially deployed in dual-comb applications such as absolute distance measurement, coherent anti-stokes Raman spectroscopy, and mid-infrared differential frequency generation.



中文翻译:

基于自激无源锁模铒光纤振荡器的超短脉宽宽带双梳激光系统

我们已经展示了双梳自由运行被动锁模 Er 光纤振荡器的脉冲持续时间压缩和波长扩展。首先,来自振荡器的双梳超短脉冲的脉冲持续时间被光纤放大器非线性压缩到~50 fs。那么,宽带波段从1.0到1.75以上的双梳状超连续谱激光光源当压缩脉冲用于泵浦高度非线性光纤时,可以达到 m。最后,利用双梳状超连续谱源作为光谱选择镱光纤放大器的种子,在1.0获得亚100 fs超短脉冲米。这种自由运行的双梳光纤激光系统可以提供超短脉冲,脉冲宽度低于 100 fs,脉冲宽度为 1.0米,1.5 m和宽带超连续谱覆盖1.0到1.75以上 m,因此它可以潜在地部署在双梳应用中,例如绝对距离测量、相干反斯托克斯拉曼光谱和中红外差频生成。

更新日期:2021-10-28
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